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MDB2.php
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<?php
// vim: set et ts=4 sw=4 fdm=marker:
// +----------------------------------------------------------------------+
// | PHP versions 4 and 5 |
// +----------------------------------------------------------------------+
// | Copyright (c) 1998-2004 Manuel Lemos, Tomas V.V.Cox, |
// | Stig. S. Bakken, Lukas Smith |
// | All rights reserved. |
// +----------------------------------------------------------------------+
// | MDB2 is a merge of PEAR DB and Metabases that provides a unified DB |
// | API as well as database abstraction for PHP applications. |
// | This LICENSE is in the BSD license style. |
// | |
// | Redistribution and use in source and binary forms, with or without |
// | modification, are permitted provided that the following conditions |
// | are met: |
// | |
// | Redistributions of source code must retain the above copyright |
// | notice, this list of conditions and the following disclaimer. |
// | |
// | Redistributions in binary form must reproduce the above copyright |
// | notice, this list of conditions and the following disclaimer in the |
// | documentation and/or other materials provided with the distribution. |
// | |
// | Neither the name of Manuel Lemos, Tomas V.V.Cox, Stig. S. Bakken, |
// | Lukas Smith nor the names of his contributors may be used to endorse |
// | or promote products derived from this software without specific prior|
// | written permission. |
// | |
// | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
// | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
// | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
// | FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
// | REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
// | INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
// | BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS|
// | OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED |
// | AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
// | LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY|
// | WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
// | POSSIBILITY OF SUCH DAMAGE. |
// +----------------------------------------------------------------------+
// | Author: Lukas Smith <smith@pooteeweet.org> |
// +----------------------------------------------------------------------+
//
// $Id$
//
/**
* @package MDB2
* @category Database
* @author Lukas Smith <smith@pooteeweet.org>
*/
require_once 'PEAR.php';
/**
* The method mapErrorCode in each MDB2_dbtype implementation maps
* native error codes to one of these.
*
* If you add an error code here, make sure you also add a textual
* version of it in MDB2::errorMessage().
*/
define('MDB2_OK', 1);
define('MDB2_ERROR', -1);
define('MDB2_ERROR_SYNTAX', -2);
define('MDB2_ERROR_CONSTRAINT', -3);
define('MDB2_ERROR_NOT_FOUND', -4);
define('MDB2_ERROR_ALREADY_EXISTS', -5);
define('MDB2_ERROR_UNSUPPORTED', -6);
define('MDB2_ERROR_MISMATCH', -7);
define('MDB2_ERROR_INVALID', -8);
define('MDB2_ERROR_NOT_CAPABLE', -9);
define('MDB2_ERROR_TRUNCATED', -10);
define('MDB2_ERROR_INVALID_NUMBER', -11);
define('MDB2_ERROR_INVALID_DATE', -12);
define('MDB2_ERROR_DIVZERO', -13);
define('MDB2_ERROR_NODBSELECTED', -14);
define('MDB2_ERROR_CANNOT_CREATE', -15);
define('MDB2_ERROR_CANNOT_DELETE', -16);
define('MDB2_ERROR_CANNOT_DROP', -17);
define('MDB2_ERROR_NOSUCHTABLE', -18);
define('MDB2_ERROR_NOSUCHFIELD', -19);
define('MDB2_ERROR_NEED_MORE_DATA', -20);
define('MDB2_ERROR_NOT_LOCKED', -21);
define('MDB2_ERROR_VALUE_COUNT_ON_ROW', -22);
define('MDB2_ERROR_INVALID_DSN', -23);
define('MDB2_ERROR_CONNECT_FAILED', -24);
define('MDB2_ERROR_EXTENSION_NOT_FOUND',-25);
define('MDB2_ERROR_NOSUCHDB', -26);
define('MDB2_ERROR_ACCESS_VIOLATION', -27);
define('MDB2_ERROR_CANNOT_REPLACE', -28);
define('MDB2_ERROR_CONSTRAINT_NOT_NULL',-29);
define('MDB2_ERROR_DEADLOCK', -30);
define('MDB2_ERROR_CANNOT_ALTER', -31);
define('MDB2_ERROR_MANAGER', -32);
define('MDB2_ERROR_MANAGER_PARSE', -33);
define('MDB2_ERROR_LOADMODULE', -34);
define('MDB2_ERROR_INSUFFICIENT_DATA', -35);
/**
* This is a special constant that tells MDB2 the user hasn't specified
* any particular get mode, so the default should be used.
*/
define('MDB2_FETCHMODE_DEFAULT', 0);
/**
* Column data indexed by numbers, ordered from 0 and up
*/
define('MDB2_FETCHMODE_ORDERED', 1);
/**
* Column data indexed by column names
*/
define('MDB2_FETCHMODE_ASSOC', 2);
/**
* Column data as object properties
*/
define('MDB2_FETCHMODE_OBJECT', 3);
/**
* For multi-dimensional results: normally the first level of arrays
* is the row number, and the second level indexed by column number or name.
* MDB2_FETCHMODE_FLIPPED switches this order, so the first level of arrays
* is the column name, and the second level the row number.
*/
define('MDB2_FETCHMODE_FLIPPED', 4);
// }}}
// {{{ portability modes
/**
* Portability: turn off all portability features.
* @see MDB2_Driver_Common::setOption()
*/
define('MDB2_PORTABILITY_NONE', 0);
/**
* Portability: convert names of tables and fields to case defined in the
* "field_case" option when using the query*(), fetch*() and tableInfo() methods.
* @see MDB2_Driver_Common::setOption()
*/
define('MDB2_PORTABILITY_FIX_CASE', 1);
/**
* Portability: right trim the data output by query*() and fetch*().
* @see MDB2_Driver_Common::setOption()
*/
define('MDB2_PORTABILITY_RTRIM', 2);
/**
* Portability: force reporting the number of rows deleted.
* @see MDB2_Driver_Common::setOption()
*/
define('MDB2_PORTABILITY_DELETE_COUNT', 4);
/**
* Portability: not needed in MDB2 (just left here for compatibility to DB)
* @see MDB2_Driver_Common::setOption()
*/
define('MDB2_PORTABILITY_NUMROWS', 8);
/**
* Portability: makes certain error messages in certain drivers compatible
* with those from other DBMS's.
*
* + mysql, mysqli: change unique/primary key constraints
* MDB2_ERROR_ALREADY_EXISTS -> MDB2_ERROR_CONSTRAINT
*
* + odbc(access): MS's ODBC driver reports 'no such field' as code
* 07001, which means 'too few parameters.' When this option is on
* that code gets mapped to MDB2_ERROR_NOSUCHFIELD.
*
* @see MDB2_Driver_Common::setOption()
*/
define('MDB2_PORTABILITY_ERRORS', 16);
/**
* Portability: convert empty values to null strings in data output by
* query*() and fetch*().
* @see MDB2_Driver_Common::setOption()
*/
define('MDB2_PORTABILITY_EMPTY_TO_NULL', 32);
/**
* Portability: removes database/table qualifiers from associative indexes
* @see MDB2_Driver_Common::setOption()
*/
define('MDB2_PORTABILITY_FIX_ASSOC_FIELD_NAMES', 64);
/**
* Portability: turn on all portability features.
* @see MDB2_Driver_Common::setOption()
*/
define('MDB2_PORTABILITY_ALL', 127);
/**
* These are global variables that are used to track the various class instances
*/
$GLOBALS['_MDB2_databases'] = array();
$GLOBALS['_MDB2_dsninfo_default'] = array(
'phptype' => false,
'dbsyntax' => false,
'username' => false,
'password' => false,
'protocol' => false,
'hostspec' => false,
'port' => false,
'socket' => false,
'database' => false,
'mode' => false,
);
/**
* The main 'MDB2' class is simply a container class with some static
* methods for creating DB objects as well as some utility functions
* common to all parts of DB.
*
* The object model of MDB2 is as follows (indentation means inheritance):
*
* MDB2 The main MDB2 class. This is simply a utility class
* with some 'static' methods for creating MDB2 objects as
* well as common utility functions for other MDB2 classes.
*
* MDB2_Driver_Common The base for each MDB2 implementation. Provides default
* | implementations (in OO lingo virtual methods) for
* | the actual DB implementations as well as a bunch of
* | query utility functions.
* |
* +-MDB2_mysql The MDB2 implementation for MySQL. Inherits MDB2_Driver_Common.
* When calling MDB2::factory or MDB2::connect for MySQL
* connections, the object returned is an instance of this
* class.
* +-MDB2_pgsql The MDB2 implementation for PostGreSQL. Inherits MDB2_Driver_Common.
* When calling MDB2::factory or MDB2::connect for PostGreSQL
* connections, the object returned is an instance of this
* class.
*
* MDB2_Date This class provides several method to convert from and to
* MDB2 timestamps.
*
* @package MDB2
* @category Database
* @author Lukas Smith <smith@pooteeweet.org>
*/
class MDB2
{
// }}}
// {{{ setOptions()
/**
* set option array in an exiting database object
*
* @param object $db MDB2 object
* @param array $options An associative array of option names and their values.
* @access public
*/
function setOptions(&$db, $options)
{
if (is_array($options)) {
foreach ($options as $option => $value) {
$test = $db->setOption($option, $value);
if (PEAR::isError($test)) {
return $test;
}
}
}
return MDB2_OK;
}
// }}}
// {{{ factory()
/**
* Create a new MDB2 object for the specified database type
*
* IMPORTANT: In order for MDB2 to work properly it is necessary that
* you make sure that you work with a reference of the original
* object instead of a copy (this is a PHP4 quirk).
*
* For example:
* $db =& MDB2::factory($dsn);
* ^^
* And not:
* $db = MDB2::factory($dsn);
*
* @param mixed $dsn 'data source name', see the MDB2::parseDSN
* method for a description of the dsn format.
* Can also be specified as an array of the
* format returned by MDB2::parseDSN.
* @param array $options An associative array of option names and
* their values.
* @return mixed a newly created MDB2 object, or false on error
* @access public
*/
function &factory($dsn, $options = false)
{
$dsninfo = MDB2::parseDSN($dsn);
if (!array_key_exists('phptype', $dsninfo)) {
$err =& MDB2::raiseError(MDB2_ERROR_NOT_FOUND,
null, null, 'no RDBMS driver specified');
return $err;
}
$class_name = 'MDB2_Driver_'.$dsninfo['phptype'];
if (!class_exists($class_name)) {
$file_name = str_replace('_', DIRECTORY_SEPARATOR, $class_name).'.php';
if (!MDB2::fileExists($file_name)) {
$err =& MDB2::raiseError(MDB2_ERROR_NOT_FOUND, null, null,
'unable to find: '.$file_name);
return $err;
}
if (!include_once($file_name)) {
$err =& MDB2::raiseError(MDB2_ERROR_NOT_FOUND, null, null,
'unable to load driver class: '.$file_name);
return $err;
}
}
$db =& new $class_name();
$db->setDSN($dsninfo);
$err = MDB2::setOptions($db, $options);
if (PEAR::isError($err)) {
return $err;
}
return $db;
}
// }}}
// {{{ connect()
/**
* Create a new MDB2 connection object and connect to the specified
* database
*
* IMPORTANT: In order for MDB2 to work properly it is necessary that
* you make sure that you work with a reference of the original
* object instead of a copy (this is a PHP4 quirk).
*
* For example:
* $db =& MDB2::connect($dsn);
* ^^
* And not:
* $db = MDB2::connect($dsn);
* ^^
*
* @param mixed $dsn 'data source name', see the MDB2::parseDSN
* method for a description of the dsn format.
* Can also be specified as an array of the
* format returned by MDB2::parseDSN.
* @param array $options An associative array of option names and
* their values.
* @return mixed a newly created MDB2 connection object, or a MDB2
* error object on error
* @access public
* @see MDB2::parseDSN
*/
function &connect($dsn, $options = false)
{
$db =& MDB2::factory($dsn, $options);
if (PEAR::isError($db)) {
return $db;
}
$err = $db->connect();
if (PEAR::isError($err)) {
$dsn = $db->getDSN('string', 'xxx');
$db->disconnect();
$err->addUserInfo($dsn);
return $err;
}
return $db;
}
// }}}
// {{{ singleton()
/**
* Returns a MDB2 connection with the requested DSN.
* A newnew MDB2 connection object is only created if no object with the
* reuested DSN exists yet.
*
* IMPORTANT: In order for MDB2 to work properly it is necessary that
* you make sure that you work with a reference of the original
* object instead of a copy (this is a PHP4 quirk).
*
* For example:
* $db =& MDB2::singleton($dsn);
* ^^
* And not:
* $db = MDB2::singleton($dsn);
* ^^
*
* @param mixed $dsn 'data source name', see the MDB2::parseDSN
* method for a description of the dsn format.
* Can also be specified as an array of the
* format returned by MDB2::parseDSN.
* @param array $options An associative array of option names and
* their values.
* @return mixed a newly created MDB2 connection object, or a MDB2
* error object on error
* @access public
* @see MDB2::parseDSN
*/
function &singleton($dsn = null, $options = false)
{
if ($dsn) {
$dsninfo = MDB2::parseDSN($dsn);
$dsninfo = array_merge($GLOBALS['_MDB2_dsninfo_default'], $dsninfo);
$keys = array_keys($GLOBALS['_MDB2_databases']);
for ($i=0, $j=count($keys); $i<$j; ++$i) {
$tmp_dsn = $GLOBALS['_MDB2_databases'][$keys[$i]]->getDSN('array');
if (count(array_diff($tmp_dsn, $dsninfo)) == 0) {
MDB2::setOptions($GLOBALS['_MDB2_databases'][$keys[$i]], $options);
return $GLOBALS['_MDB2_databases'][$keys[$i]];
}
}
} elseif (is_array($GLOBALS['_MDB2_databases']) && reset($GLOBALS['_MDB2_databases'])) {
$db =& $GLOBALS['_MDB2_databases'][key($GLOBALS['_MDB2_databases'])];
return $db;
}
$db =& MDB2::factory($dsn, $options);
return $db;
}
// }}}
// {{{ loadFile()
/**
* load a file (like 'Date')
*
* @param string $file name of the file in the MDB2 directory (without '.php')
* @return string name of the file that was included
* @access public
*/
function loadFile($file)
{
$file_name = 'MDB2'.DIRECTORY_SEPARATOR.$file.'.php';
if (!MDB2::fileExists($file_name)) {
return MDB2::raiseError(MDB2_ERROR_NOT_FOUND, null, null,
'unable to find: '.$file_name);
}
if (!include_once($file_name)) {
return MDB2::raiseError(MDB2_ERROR_NOT_FOUND, null, null,
'unable to load driver class: '.$file_name);
}
return $file_name;
}
// }}}
// {{{ apiVersion()
/**
* Return the MDB2 API version
*
* @return string the MDB2 API version number
* @access public
*/
function apiVersion()
{
return '@package_version@';
}
// }}}
// {{{ raiseError()
/**
* This method is used to communicate an error and invoke error
* callbacks etc. Basically a wrapper for PEAR::raiseError
* without the message string.
*
* @param mixed integer error code
*
* @param int error mode, see PEAR_Error docs
*
* @param mixed If error mode is PEAR_ERROR_TRIGGER, this is the
* error level (E_USER_NOTICE etc). If error mode is
* PEAR_ERROR_CALLBACK, this is the callback function,
* either as a function name, or as an array of an
* object and method name. For other error modes this
* parameter is ignored.
*
* @param string Extra debug information. Defaults to the last
* query and native error code.
*
* @return object a PEAR error object
*
* @see PEAR_Error
*/
function &raiseError($code = null, $mode = null, $options = null, $userinfo = null)
{
$err =& PEAR::raiseError(null, $code, $mode, $options, $userinfo, 'MDB2_Error', true);
return $err;
}
// }}}
// {{{ isError()
/**
* Tell whether a value is a MDB2 error.
*
* @param mixed $data the value to test
* @param int $code if $data is an error object, return true
* only if $code is a string and
* $db->getMessage() == $code or
* $code is an integer and $db->getCode() == $code
* @access public
* @return bool true if parameter is an error
*/
function isError($data, $code = null)
{
if (is_a($data, 'MDB2_Error')) {
if (is_null($code)) {
return true;
} elseif (is_string($code)) {
return $data->getMessage() === $code;
} else {
$code = (array)$code;
return in_array($data->getCode(), $code);
}
}
return false;
}
// }}}
// {{{ isConnection()
/**
* Tell whether a value is a MDB2 connection
*
* @param mixed $value value to test
* @return bool whether $value is a MDB2 connection
* @access public
*/
function isConnection($value)
{
return is_a($value, 'MDB2_Driver_Common');
}
// }}}
// {{{ isResult()
/**
* Tell whether a value is a MDB2 result
*
* @param mixed $value value to test
* @return bool whether $value is a MDB2 result
* @access public
*/
function isResult($value)
{
return is_a($value, 'MDB2_Result');
}
// }}}
// {{{ isResultCommon()
/**
* Tell whether a value is a MDB2 result implementing the common interface
*
* @param mixed $value value to test
* @return bool whether $value is a MDB2 result implementing the common interface
* @access public
*/
function isResultCommon($value)
{
return is_a($value, 'MDB2_Result_Common');
}
// }}}
// {{{ isStatement()
/**
* Tell whether a value is a MDB2 statement interface
*
* @param mixed $value value to test
* @return bool whether $value is a MDB2 statement interface
* @access public
*/
function isStatement($value)
{
return is_a($value, 'MDB2_Statement');
}
// }}}
// {{{ isManip()
/**
* Tell whether a query is a data manipulation query (insert,
* update or delete) or a data definition query (create, drop,
* alter, grant, revoke).
*
* @param string $query the query
* @return boolean whether $query is a data manipulation query
* @access public
*/
function isManip($query)
{
$manips = 'INSERT|UPDATE|DELETE|REPLACE|'
. 'CREATE|DROP|'
. 'LOAD DATA|SELECT .* INTO|COPY|'
. 'ALTER|GRANT|REVOKE|SET|'
. 'LOCK|UNLOCK';
if (preg_match('/^\s*"?('.$manips.')\s+/i', $query)) {
return true;
}
return false;
}
// }}}
// {{{ errorMessage()
/**
* Return a textual error message for a MDB2 error code
*
* @param int $value error code
* @return string error message, or false if the error code was
* not recognized
* @access public
*/
function errorMessage($value)
{
static $errorMessages;
if (!isset($errorMessages)) {
$errorMessages = array(
MDB2_ERROR => 'unknown error',
MDB2_ERROR_ALREADY_EXISTS => 'already exists',
MDB2_ERROR_CANNOT_CREATE => 'can not create',
MDB2_ERROR_CANNOT_ALTER => 'can not alter',
MDB2_ERROR_CANNOT_REPLACE => 'can not replace',
MDB2_ERROR_CANNOT_DELETE => 'can not delete',
MDB2_ERROR_CANNOT_DROP => 'can not drop',
MDB2_ERROR_CONSTRAINT => 'constraint violation',
MDB2_ERROR_CONSTRAINT_NOT_NULL=> 'null value violates not-null constraint',
MDB2_ERROR_DIVZERO => 'division by zero',
MDB2_ERROR_INVALID => 'invalid',
MDB2_ERROR_INVALID_DATE => 'invalid date or time',
MDB2_ERROR_INVALID_NUMBER => 'invalid number',
MDB2_ERROR_MISMATCH => 'mismatch',
MDB2_ERROR_NODBSELECTED => 'no database selected',
MDB2_ERROR_NOSUCHFIELD => 'no such field',
MDB2_ERROR_NOSUCHTABLE => 'no such table',
MDB2_ERROR_NOT_CAPABLE => 'MDB2 backend not capable',
MDB2_ERROR_NOT_FOUND => 'not found',
MDB2_ERROR_NOT_LOCKED => 'not locked',
MDB2_ERROR_SYNTAX => 'syntax error',
MDB2_ERROR_UNSUPPORTED => 'not supported',
MDB2_ERROR_VALUE_COUNT_ON_ROW => 'value count on row',
MDB2_ERROR_INVALID_DSN => 'invalid DSN',
MDB2_ERROR_CONNECT_FAILED => 'connect failed',
MDB2_OK => 'no error',
MDB2_ERROR_NEED_MORE_DATA => 'insufficient data supplied',
MDB2_ERROR_EXTENSION_NOT_FOUND=> 'extension not found',
MDB2_ERROR_NOSUCHDB => 'no such database',
MDB2_ERROR_ACCESS_VIOLATION => 'insufficient permissions',
MDB2_ERROR_LOADMODULE => 'error while including on demand module',
MDB2_ERROR_TRUNCATED => 'truncated',
MDB2_ERROR_DEADLOCK => 'deadlock detected',
);
}
if (PEAR::isError($value)) {
$value = $value->getCode();
}
return isset($errorMessages[$value]) ?
$errorMessages[$value] : $errorMessages[MDB2_ERROR];
}
// }}}
// {{{ parseDSN()
/**
* Parse a data source name.
*
* Additional keys can be added by appending a URI query string to the
* end of the DSN.
*
* The format of the supplied DSN is in its fullest form:
* <code>
* phptype(dbsyntax)://username:password@protocol+hostspec/database?option=8&another=true
* </code>
*
* Most variations are allowed:
* <code>
* phptype://username:password@protocol+hostspec:110//usr/db_file.db?mode=0644
* phptype://username:password@hostspec/database_name
* phptype://username:password@hostspec
* phptype://username@hostspec
* phptype://hostspec/database
* phptype://hostspec
* phptype(dbsyntax)
* phptype
* </code>
*
* @param string $dsn Data Source Name to be parsed
*
* @return array an associative array with the following keys:
* + phptype: Database backend used in PHP (mysql, odbc etc.)
* + dbsyntax: Database used with regards to SQL syntax etc.
* + protocol: Communication protocol to use (tcp, unix etc.)
* + hostspec: Host specification (hostname[:port])
* + database: Database to use on the DBMS server
* + username: User name for login
* + password: Password for login
*
* @author Tomas V.V.Cox <cox@idecnet.com>
*/
function parseDSN($dsn)
{
$parsed = $GLOBALS['_MDB2_dsninfo_default'];
if (is_array($dsn)) {
$dsn = array_merge($parsed, $dsn);
if (!$dsn['dbsyntax']) {
$dsn['dbsyntax'] = $dsn['phptype'];
}
return $dsn;
}
// Find phptype and dbsyntax
if (($pos = strpos($dsn, '://')) !== false) {
$str = substr($dsn, 0, $pos);
$dsn = substr($dsn, $pos + 3);
} else {
$str = $dsn;
$dsn = null;
}
// Get phptype and dbsyntax
// $str => phptype(dbsyntax)
if (preg_match('|^(.+?)\((.*?)\)$|', $str, $arr)) {
$parsed['phptype'] = $arr[1];
$parsed['dbsyntax'] = !$arr[2] ? $arr[1] : $arr[2];
} else {
$parsed['phptype'] = $str;
$parsed['dbsyntax'] = $str;
}
if (!count($dsn)) {
return $parsed;
}
// Get (if found): username and password
// $dsn => username:password@protocol+hostspec/database
if (($at = strrpos($dsn,'@')) !== false) {
$str = substr($dsn, 0, $at);
$dsn = substr($dsn, $at + 1);
if (($pos = strpos($str, ':')) !== false) {
$parsed['username'] = rawurldecode(substr($str, 0, $pos));
$parsed['password'] = rawurldecode(substr($str, $pos + 1));
} else {
$parsed['username'] = rawurldecode($str);
}
}
// Find protocol and hostspec
// $dsn => proto(proto_opts)/database
if (preg_match('|^([^(]+)\((.*?)\)/?(.*?)$|', $dsn, $match)) {
$proto = $match[1];
$proto_opts = $match[2] ? $match[2] : false;
$dsn = $match[3];
// $dsn => protocol+hostspec/database (old format)
} else {
if (strpos($dsn, '+') !== false) {
list($proto, $dsn) = explode('+', $dsn, 2);
}
if (strpos($dsn, '/') !== false) {
list($proto_opts, $dsn) = explode('/', $dsn, 2);
} else {
$proto_opts = $dsn;
$dsn = null;
}
}
// process the different protocol options
$parsed['protocol'] = (!empty($proto)) ? $proto : 'tcp';
$proto_opts = rawurldecode($proto_opts);
if ($parsed['protocol'] == 'tcp') {
if (strpos($proto_opts, ':') !== false) {
list($parsed['hostspec'], $parsed['port']) = explode(':', $proto_opts);
} else {
$parsed['hostspec'] = $proto_opts;
}
} elseif ($parsed['protocol'] == 'unix') {
$parsed['socket'] = $proto_opts;
}
// Get dabase if any
// $dsn => database
if ($dsn) {
// /database
if (($pos = strpos($dsn, '?')) === false) {
$parsed['database'] = $dsn;
// /database?param1=value1&param2=value2
} else {
$parsed['database'] = substr($dsn, 0, $pos);
$dsn = substr($dsn, $pos + 1);
if (strpos($dsn, '&') !== false) {
$opts = explode('&', $dsn);
} else { // database?param1=value1
$opts = array($dsn);
}
foreach ($opts as $opt) {
list($key, $value) = explode('=', $opt);
if (!isset($parsed[$key])) {
// don't allow params overwrite
$parsed[$key] = rawurldecode($value);
}
}
}
}
return $parsed;
}
// }}}
// {{{ fileExists()
/**
* checks if a file exists in the include path
*
* @access public
* @param string filename
*
* @return boolean true success and false on error
*/
function fileExists($file)
{
$dirs = explode(PATH_SEPARATOR, ini_get('include_path'));
foreach ($dirs as $dir) {
if (is_readable($dir . DIRECTORY_SEPARATOR . $file)) {
return true;
}
}
return false;
}
}
/**
* MDB2_Error implements a class for reporting portable database error
* messages.
*
* @package MDB2
* @category Database
* @author Stig Bakken <ssb@fast.no>
*/
class MDB2_Error extends PEAR_Error
{
// }}}
// {{{ constructor
/**
* MDB2_Error constructor.
*
* @param mixed $code MDB error code, or string with error message.
* @param integer $mode what 'error mode' to operate in
* @param integer $level what error level to use for
* $mode & PEAR_ERROR_TRIGGER
* @param smixed $debuginfo additional debug info, such as the last query
*/
function MDB2_Error($code = MDB2_ERROR, $mode = PEAR_ERROR_RETURN,
$level = E_USER_NOTICE, $debuginfo = null)
{
$this->PEAR_Error('MDB2 Error: '.MDB2::errorMessage($code), $code,
$mode, $level, $debuginfo);
}
}
/**
* MDB2_Driver_Common: Base class that is extended by each MDB2 driver
*
* @package MDB2
* @category Database
* @author Lukas Smith <smith@pooteeweet.org>
*/
class MDB2_Driver_Common extends PEAR
{
/**
* index of the MDB2 object within the $GLOBALS['_MDB2_databases'] array
* @var integer
* @access public
*/
var $db_index = 0;
/**
* DSN used for the next query
* @var array
* @access protected
*/
var $dsn = array();
/**
* DSN that was used to create the current connection
* @var array
* @access protected
*/
var $connected_dsn = array();
/**
* connection resource
* @var mixed
* @access protected
*/
var $connection = 0;
/**
* if the current opened connection is a persistent connection
* @var boolean
* @access protected
*/
var $opened_persistent;
/**
* the name of the database for the next query
* @var string
* @access protected
*/
var $database_name = '';
/**
* the name of the database currrently selected
* @var string
* @access protected
*/
var $connected_database_name = '';
/**
* list of all supported features of the given driver
* @var array
* @access public
*/
var $supported = array(
'sequences' => false,
'indexes' => false,
'affected_rows' => false,
'summary_functions' => false,
'order_by_text' => false,
'transactions' => false,
'current_id' => false,
'limit_queries' => false,
'LOBs' => false,
'replace' => false,
'sub_selects' => false,
'auto_increment' => false,
'primary_key' => false,
);
/**
* $options['ssl'] -> determines if ssl should be used for connections
* $options['field_case'] -> determines what case to force on field/table names
* $options['disable_query'] -> determines if querys should be executed
* $options['result_class'] -> class used for result sets
* $options['buffered_result_class'] -> class used for buffered result sets
* $options['result_wrap_class'] -> class used to wrap result sets into
* $options['result_buffering'] -> boolean|integer should results be buffered or not?
* $options['fetch_class'] -> class to use when fetch mode object is used
* $options['persistent'] -> boolean persistent connection?
* $options['debug'] -> integer numeric debug level
* $options['debug_handler'] -> string function/meothd that captures debug messages
* $options['lob_buffer_length'] -> integer LOB buffer length
* $options['log_line_break'] -> string line-break format
* $options['seqname_format'] -> string pattern for sequence name
* $options['seqcol_name'] -> string sequence column name
* $options['use_transactions'] -> boolean
* $options['decimal_places'] -> integer
* $options['portability'] -> portability constant
* $options['modules'] -> short to long module name mapping for __call()
* @var array
* @access public
*/
var $options = array(
'ssl' => false,
'field_case' => CASE_LOWER,
'disable_query' => false,
'result_class' => 'MDB2_Result_%s',
'buffered_result_class' => 'MDB2_BufferedResult_%s',
'result_wrap_class' => false,
'result_buffering' => true,
'fetch_class' => 'stdClass',
'persistent' => false,
'debug' => 0,
'debug_handler' => 'MDB2_defaultDebugOutput',
'lob_buffer_length' => 8192,
'log_line_break' => "\n",
'seqname_format' => '%s_seq',
'seqcol_name' => 'sequence',
'use_transactions' => false,
'decimal_places' => 2,
'portability' => MDB2_PORTABILITY_ALL,
'modules' => array(
'ex' => 'Extended',
'dt' => 'Datatype',
'mg' => 'Manager',
'rv' => 'Reverse',
'na' => 'Native',
),
);
/**
* escape character
* @var string
* @access protected
*/
var $escape_quotes = '';
/**
* warnings
* @var array
* @access protected
*/
var $warnings = array();
/**
* string with the debugging information
* @var string
* @access public
*/
var $debug_output = '';
/**
* determine if there is an open transaction
* @var boolean
* @access protected
*/
var $in_transaction = false;
/**
* result offset used in the next query
* @var integer
* @access protected
*/
var $row_offset = 0;
/**
* result limit used in the next query
* @var integer
* @access protected
*/
var $row_limit = 0;
/**
* Database backend used in PHP (mysql, odbc etc.)
* @var string
* @access protected
*/
var $phptype;
/**
* Database used with regards to SQL syntax etc.
* @var string
* @access protected
*/
var $dbsyntax;
/**
* the last query sent to the driver
* @var string
* @access public
*/
var $last_query;
/**
* the default fetchmode used
* @var integer
* @access protected
*/
var $fetchmode = MDB2_FETCHMODE_ORDERED;
/**
* array of module instances
* @var array
* @access protected
*/
var $modules = array();
/**
* determines of the PHP4 destructor emulation has been enabled yet
* @var array
* @access protected
*/
var $destructor_registered = true;
// }}}
// {{{ constructor
/**
* Constructor
*/
function __construct()
{
end($GLOBALS['_MDB2_databases']);
$db_index = key($GLOBALS['_MDB2_databases']) + 1;
$GLOBALS['_MDB2_databases'][$db_index] = &$this;
$this->db_index = $db_index;
}
// }}}
// {{{ MDB2_Driver_Common
/**
* PHP 4 Constructor
*/
function MDB2_Driver_Common()
{
$this->destructor_registered = false;
$this->__construct();
}
// }}}
// {{{ Destructor
/**
* Destructor
*/
function __destruct()
{
if ($this->connection) {
if ($this->opened_persistent) {
if ($this->in_transaction) {
$this->rollback();
}
} else {
$this->disconnect();
}
}
}
// }}}
// {{{ free()
/**
* Free the internal references so that the instance can be destroyed
*
* @return boolean true on success, false if result is invalid
* @access public
*/
function free()
{
unset($GLOBALS['_MDB2_databases'][$this->db_index]);
unset($this->db_index);
return MDB2_OK;
}
// }}}
// {{{ __toString()
/**
* String conversation
*
* @return string
* @access public
*/
function __toString()
{
$info = get_class($this);
$info.= ': (phptype = '.$this->phptype.', dbsyntax = '.$this->dbsyntax.')';
if ($this->connection) {
$info.= ' [connected]';
}
return $info;
}
// }}}
// {{{ errorInfo()
/**
* This method is used to collect information about an error
*
* @param integer $error
* @return array
* @access public
*/
function errorInfo($error = null)
{
return array($error, null, null);
}
// }}}
// {{{ raiseError()
/**
* This method is used to communicate an error and invoke error
* callbacks etc. Basically a wrapper for PEAR::raiseError
* without the message string.
*
* @param mixed integer error code, or a PEAR error object (all
* other parameters are ignored if this parameter is
* an object
*
* @param int error mode, see PEAR_Error docs
*
* @param mixed If error mode is PEAR_ERROR_TRIGGER, this is the
* error level (E_USER_NOTICE etc). If error mode is
* PEAR_ERROR_CALLBACK, this is the callback function,
* either as a function name, or as an array of an
* object and method name. For other error modes this
* parameter is ignored.
*
* @param string Extra debug information. Defaults to the last
* query and native error code.
*
* @return object a PEAR error object
*
* @see PEAR_Error
*/
function &raiseError($code = null, $mode = null, $options = null, $userinfo = null)
{
// The error is yet a MDB2 error object
if (PEAR::isError($code)) {
// because we use the static PEAR::raiseError, our global
// handler should be used if it is set
if (is_null($mode) && !empty($this->_default_error_mode)) {
$mode = $this->_default_error_mode;
$options = $this->_default_error_options;
}
} else {
if (is_null($userinfo) && isset($this->connection)) {
if (!empty($this->last_query)) {
$userinfo = "[Last query: {$this->last_query}]\n";
}
$native_errno = $native_msg = null;
list($code, $native_errno, $native_msg) = $this->errorInfo($code);
if (!is_null($native_errno)) {
$userinfo.= "[Native code: $native_errno]\n";
}
if (!is_null($native_msg)) {
$userinfo.= "[Native message: ". strip_tags($native_msg) ."]\n";
}
} else {
$userinfo = "[Error message: $userinfo]\n";
}
}
$err =& PEAR::raiseError(null, $code, $mode, $options, $userinfo, 'MDB2_Error', true);
return $err;
}
// }}}
// {{{ errorNative()
/**
* returns an errormessage, provides by the database
*
* @return mixed MDB2 Error Object or message
* @access public
*/
function errorNative()
{
return $this->raiseError(MDB2_ERROR_UNSUPPORTED);
}
// }}}
// {{{ resetWarnings()
/**
* reset the warning array
*
* @access public
*/
function resetWarnings()
{
$this->warnings = array();
}
// }}}
// {{{ getWarnings()
/**
* get all warnings in reverse order.
* This means that the last warning is the first element in the array
*
* @return array with warnings
* @access public
* @see resetWarnings()
*/
function getWarnings()
{
return array_reverse($this->warnings);
}
// }}}
// {{{ setFetchMode()
/**
* Sets which fetch mode should be used by default on queries
* on this connection
*
* @param integer $fetchmode MDB2_FETCHMODE_ORDERED, MDB2_FETCHMODE_ASSOC
* or MDB2_FETCHMODE_OBJECT
* @param string $object_class the class name of the object to be returned
* by the fetch methods when the
* MDB2_FETCHMODE_OBJECT mode is selected.
* If no class is specified by default a cast
* to object from the assoc array row will be
* done. There is also the posibility to use
* and extend the 'MDB2_row' class.
*
* @see MDB2_FETCHMODE_ORDERED, MDB2_FETCHMODE_ASSOC, MDB2_FETCHMODE_OBJECT
* @access public
*/
function setFetchMode($fetchmode, $object_class = 'stdClass')
{
switch ($fetchmode) {
case MDB2_FETCHMODE_OBJECT:
$this->options['fetch_class'] = $object_class;
case MDB2_FETCHMODE_ORDERED:
case MDB2_FETCHMODE_ASSOC:
$this->fetchmode = $fetchmode;
break;
default:
return $this->raiseError('invalid fetchmode mode');
}
}
// }}}
// {{{ setOption()
/**
* set the option for the db class
*
* @param string $option option name
* @param mixed $value value for the option
* @return mixed MDB2_OK or MDB2 Error Object
* @access public
*/
function setOption($option, $value)
{
if (array_key_exists($option, $this->options)) {
$this->options[$option] = $value;
return MDB2_OK;
}
return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
"unknown option $option");
}
// }}}
// {{{ getOption()
/**
* returns the value of an option
*
* @param string $option option name
* @return mixed the option value or error object
* @access public
*/
function getOption($option)
{
if (array_key_exists($option, $this->options)) {
return $this->options[$option];
}
return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
"unknown option $option");
}
// }}}
// {{{ debug()
/**
* set a debug message
*
* @param string $message Message with information for the user.
* @access public
*/
function debug($message, $scope = '')
{
if ($this->options['debug'] && $this->options['debug_handler']) {
call_user_func_array($this->options['debug_handler'], array(&$this, $scope, $message));
}
}
// }}}
// {{{ debugOutput()
/**
* output debug info
*
* @return string content of the debug_output class variable
* @access public
*/
function debugOutput()
{
return $this->debug_output;
}
// }}}
// {{{ escape()
/**
* Quotes a string so it can be safely used in a query. It will quote
* the text so it can safely be used within a query.
*
* @param string $text the input string to quote
* @return string quoted string
* @access public
*/
function escape($text)
{
if ($this->escape_quotes !== "'") {
$text = str_replace($this->escape_quotes, $this->escape_quotes.$this->escape_quotes, $text);
}
return str_replace("'", $this->escape_quotes . "'", $text);
}
// }}}
// {{{ quoteIdentifier()
/**
* Quote a string so it can be safely used as a table or column name
*
* Delimiting style depends on which database driver is being used.
*
* NOTE: just because you CAN use delimited identifiers doesn't mean
* you SHOULD use them. In general, they end up causing way more
* problems than they solve.
*
* Portability is broken by using the following characters inside
* delimited identifiers:
* + backtick (<kbd>`</kbd>) -- due to MySQL
* + double quote (<kbd>"</kbd>) -- due to Oracle
* + brackets (<kbd>[</kbd> or <kbd>]</kbd>) -- due to Access
*
* Delimited identifiers are known to generally work correctly under
* the following drivers:
* + mssql
* + mysql
* + mysqli
* + oci8
* + odbc(access)
* + odbc(db2)
* + pgsql
* + sqlite
* + sybase
*
* InterBase doesn't seem to be able to use delimited identifiers
* via PHP 4. They work fine under PHP 5.
*
* @param string $str identifier name to be quoted
*
* @return string quoted identifier string
*
* @access public
*/
function quoteIdentifier($str)
{
return '"' . str_replace('"', '""', $str) . '"';
}
// }}}
// {{{ _fixResultArrayValues()
/**
* Do all necessary conversions on result arrays to fix DBMS quirks
*
* @param array $array the array to be fixed (passed by reference)
* @return void
* @access protected
*/
function _fixResultArrayValues(&$array, $mode)
{
switch ($mode) {
case MDB2_PORTABILITY_RTRIM:
foreach ($array as $key => $value) {
if (is_string($value)) {
$array[$key] = rtrim($value);
}
}
case MDB2_PORTABILITY_EMPTY_TO_NULL:
foreach ($array as $key => $value) {
if ($value === '') {
$array[$key] = null;
}
}
case MDB2_PORTABILITY_FIX_ASSOC_FIELD_NAMES:
$tmp_array = array();
foreach ($array as $key => $value) {
$tmp_array[preg_replace('/^(?:.*\.)?([^.]+)$/', '\\1', $key)] = $value;
}
$array = $tmp_array;
case (MDB2_PORTABILITY_RTRIM + MDB2_PORTABILITY_EMPTY_TO_NULL):
foreach ($array as $key => $value) {
if ($value === '') {
$array[$key] = null;
} elseif (is_string($value)) {
$array[$key] = rtrim($value);
}
}
case (MDB2_PORTABILITY_RTRIM + MDB2_PORTABILITY_FIX_ASSOC_FIELD_NAMES):
$tmp_array = array();
foreach ($array as $key => $value) {
if (is_string($value)) {
$value = rtrim($value);
}
$tmp_array[preg_replace('/^(?:.*\.)?([^.]+)$/', '\\1', $key)] = $value;
}
$array = $tmp_array;
case (MDB2_PORTABILITY_EMPTY_TO_NULL + MDB2_PORTABILITY_FIX_ASSOC_FIELD_NAMES):
$tmp_array = array();
foreach ($array as $key => $value) {
if ($value === '') {
$value = null;
}
$tmp_array[preg_replace('/^(?:.*\.)?([^.]+)$/', '\\1', $key)] = $value;
}
$array = $tmp_array;
case (MDB2_PORTABILITY_RTRIM + MDB2_PORTABILITY_EMPTY_TO_NULL + MDB2_PORTABILITY_FIX_ASSOC_FIELD_NAMES):
$tmp_array = array();
foreach ($array as $key => $value) {
if ($value === '') {
$value = null;
} elseif (is_string($value)) {
$value = rtrim($value);
}
$tmp_array[preg_replace('/^(?:.*\.)?([^.]+)$/', '\\1', $key)] = $value;
}
$array = $tmp_array;
}
}
// }}}
// {{{ loadModule()
/**
* loads a module
*
* @param string $module name of the module that should be loaded
* (only used for error messages)
* @param string $property name of the property into which the class will be loaded
* @return object on success a reference to the given module is returned
* and on failure a PEAR error
* @access public
*/
function &loadModule($module, $property = null)
{
if (!$property) {
$property = strtolower($module);
}
if (!isset($this->{$property})) {
$version = false;
$class_name = 'MDB2_'.$module;
$file_name = str_replace('_', DIRECTORY_SEPARATOR, $class_name).'.php';
if (!class_exists($class_name) && !MDB2::fileExists($file_name)) {
$class_name = 'MDB2_Driver_'.$module.'_'.$this->phptype;
$file_name = str_replace('_', DIRECTORY_SEPARATOR, $class_name).'.php';
$version = true;
if (!class_exists($class_name) && !MDB2::fileExists($file_name)) {
$err =& $this->raiseError(MDB2_ERROR_LOADMODULE, null, null,
'unable to find module: '.$file_name);
return $err;
}
}
if (!class_exists($class_name) && !include_once($file_name)) {
$err =& $this->raiseError(MDB2_ERROR_LOADMODULE, null, null,
'unable to load manager driver class: '.$file_name);
return $err;
}
// load modul in a specific version
if ($version) {
if (method_exists($class_name, 'getClassName')) {
$class_name_new = call_user_func(array($class_name, 'getClassName'), $this->db_index);
if ($class_name != $class_name_new) {
$class_name = $class_name_new;
$file_name = str_replace('_', DIRECTORY_SEPARATOR, $class_name).'.php';
if (!MDB2::fileExists($file_name)) {
$err =& $this->raiseError(MDB2_ERROR_LOADMODULE, null, null,
'unable to find module: '.$file_name);
return $err;
}
if (!include_once($file_name)) {
$err =& $this->raiseError(MDB2_ERROR_LOADMODULE, null, null,
'unable to load manager driver class: '.$file_name);
return $err;
}
}
}
}
if (!class_exists($class_name)) {
$err =& $this->raiseError(MDB2_ERROR_LOADMODULE, null, null,
'unable to load module: '.$module.' into property: '.$property);
return $err;
}
$this->{$property} =& new $class_name($this->db_index);
$this->modules[$module] =& $this->{$property};
if ($version) {
// this wil be used in the connect method to determine if the module
// needs to be loaded with a different version if the server
// version changed in between connects
$this->loaded_version_modules[] = $property;
}
}
return $this->{$property};
}
/**
* Calls a module method using the __call magic method
*
* @param string Method name.
* @param array Arguments.
* @return mixed Returned value.
*/
function __call($method, $params)
{
$module = null;
if (preg_match('/^([a-z]+)([A-Z])(.*)$/', $method, $match)
&& isset($this->options['modules'][$match[1]])
) {
$module = $this->options['modules'][$match[1]];
$method = strtolower($match[2]).$match[3];
if (!isset($this->modules[$module]) || !is_object($this->modules[$module])) {
$result =& $this->loadModule($module);
if (PEAR::isError($result)) {
return $result;
}
}
} else {
foreach ($this->modules as $key => $foo) {
if (is_object($this->modules[$key])
&& method_exists($this->modules[$key], $method)
) {
$module = $key;
break;
}
}
}
if (!is_null($module)) {
return call_user_func_array(array(&$this->modules[$module], $method), $params);
}
trigger_error(sprintf('Call to undefined function: %s::%s().', get_class($this), $method), E_USER_ERROR);
}
// }}}
// {{{ beginTransaction()
/**
* Start a transaction.
*
* @return mixed MDB2_OK on success, a MDB2 error on failure
* @access public
*/
function beginTransaction()
{
$this->debug('Starting transaction', 'beginTransaction');
return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
'beginTransaction: transactions are not supported');
}
// }}}
// {{{ commit()
/**
* Commit the database changes done during a transaction that is in
* progress. This function may only be called when auto-committing is
* disabled, otherwise it will fail. Therefore, a new transaction is
* implicitly started after committing the pending changes.
*
* @return mixed MDB2_OK on success, a MDB2 error on failure
* @access public
*/
function commit()
{
$this->debug('commiting transaction', 'commit');
return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
'commit: commiting transactions is not supported');
}
// }}}
// {{{ rollback()
/**
* Cancel any database changes done during a transaction that is in
* progress. This function may only be called when auto-committing is
* disabled, otherwise it will fail. Therefore, a new transaction is
* implicitly started after canceling the pending changes.
*
* @return mixed MDB2_OK on success, a MDB2 error on failure
* @access public
*/
function rollback()
{
$this->debug('rolling back transaction', 'rollback');
return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
'rollback: rolling back transactions is not supported');
}
// }}}
// {{{ disconnect()
/**
* Log out and disconnect from the database.
*
* @return mixed true on success, false if not connected and error
* object on error
* @access public
*/
function disconnect()
{
return MDB2_OK;
}
// }}}
// {{{ setDatabase()
/**
* Select a different database
*
* @param string $name name of the database that should be selected
* @return string name of the database previously connected to
* @access public
*/
function setDatabase($name)
{
$previous_database_name = (isset($this->database_name)) ? $this->database_name : '';
$this->database_name = $name;
return $previous_database_name;
}
// }}}
// {{{ getDatabase()
/**
* get the current database
*
* @return string name of the database
* @access public
*/
function getDatabase()
{
return $this->database_name;
}
// }}}
// {{{ setDSN()
/**
* set the DSN
*
* @param mixed $dsn DSN string or array
* @return MDB2_OK
* @access public
*/
function setDSN($dsn)
{
$dsn_default = $GLOBALS['_MDB2_dsninfo_default'];
$dsn = MDB2::parseDSN($dsn);
if (array_key_exists('database', $dsn)) {
$this->database_name = $dsn['database'];
unset($dsn['database']);
}
$this->dsn = array_merge($dsn_default, $dsn);
return MDB2_OK;
}
// }}}
// {{{ getDSN()
/**
* return the DSN as a string
*
* @param string $type format to return ("array", "string")
* @param string $hidepw string to hide the password with
* @return mixed DSN in the chosen type
* @access public
*/
function getDSN($type = 'string', $hidepw = false)
{
$dsn = array_merge($GLOBALS['_MDB2_dsninfo_default'], $this->dsn);
$dsn['phptype'] = $this->phptype;
$dsn['database'] = $this->database_name;
if ($hidepw) {
$dsn['password'] = $hidepw;
}
switch ($type) {
// expand to include all possible options
case 'string':
$dsn = $dsn['phptype'].'://'.$dsn['username'].':'.
$dsn['password'].'@'.$dsn['hostspec'].
($dsn['port'] ? (':'.$dsn['port']) : '').
'/'.$dsn['database'];
break;
case 'array':
default:
break;
}
return $dsn;
}
// }}}
// {{{ standaloneQuery()
/**
* execute a query as database administrator
*
* @param string $query the SQL query
* @param mixed $types array that contains the types of the columns in
* the result set
* @return mixed MDB2_OK on success, a MDB2 error on failure
* @access public
*/
function &standaloneQuery($query, $types = null)
{
$isManip = MDB2::isManip($query);
$offset = $this->row_offset;
$limit = $this->row_limit;
$this->row_offset = $this->row_limit = 0;
$query = $this->_modifyQuery($query, $isManip, $limit, $offset);
$connected = $this->connect();
if (PEAR::isError($connected)) {
return $connected;
}
$result = $this->_doQuery($query, $isManip, $this->connection, false);
if (PEAR::isError($result)) {
return $result;
}
if ($isManip) {
return $result;
}
$result =& $this->_wrapResult($result, $types, true, false, $limit, $offset);
return $result;
}
// }}}
// {{{ _modifyQuery()
/**
* Changes a query string for various DBMS specific reasons
*
* @param string $query query to modify
* @return the new (modified) query
* @access protected
*/
function _modifyQuery($query)
{
return $query;
}
// }}}
// {{{ _doQuery()
/**
* Execute a query
* @param string $query query
* @param boolean $isManip if the query is a manipulation query
* @param resource $connection
* @param string $database_name
* @return result or error object
* @access protected
*/
function _doQuery($query, $isManip = false, $connection = null, $database_name = null)
{
$this->last_query = $query;
$this->debug($query, 'query');
return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
'query: method not implemented');
}
// }}}
// {{{ query()
/**
* Send a query to the database and return any results
*
* @param string $query the SQL query
* @param mixed $types array that contains the types of the columns in
* the result set
* @param mixed $result_class string which specifies which result class to use
* @param mixed $result_wrap_class string which specifies which class to wrap results in
* @return mixed a result handle or MDB2_OK on success, a MDB2 error on failure
* @access public
*/
function &query($query, $types = null, $result_class = true, $result_wrap_class = false)
{
$isManip = MDB2::isManip($query);
$offset = $this->row_offset;
$limit = $this->row_limit;
$this->row_offset = $this->row_limit = 0;
$query = $this->_modifyQuery($query, $isManip, $limit, $offset);
$connected = $this->connect();
if (PEAR::isError($connected)) {
return $connected;
}
$result = $this->_doQuery($query, $isManip, $this->connection, $this->database_name);
if (PEAR::isError($result)) {
return $result;
}
// check for integers instead of manip since drivers may do some
// custom checks not covered by MDB2::isManip()
if (is_int($result)) {
return $result;
}
$result =& $this->_wrapResult($result, $types, $result_class, $result_wrap_class, $limit, $offset);
return $result;
}
// }}}
// {{{ _wrapResult()
/**
* wrap a result set into the correct class
*
* @param ressource $result
* @param mixed $types array that contains the types of the columns in
* the result set
* @param mixed $result_class string which specifies which result class to use
* @param mixed $result_wrap_class string which specifies which class to wrap results in
* @param string $limit number of rows to select
* @param string $offset first row to select
* @return mixed a result handle or MDB2_OK on success, a MDB2 error on failure
* @access protected
*/
function &_wrapResult($result, $types = array(), $result_class = true,
$result_wrap_class = false, $limit = null, $offset = null)
{
if ($result_class === true) {
$result_class = $this->options['result_buffering']
? $this->options['buffered_result_class'] : $this->options['result_class'];
}
if ($result_class) {
$class_name = sprintf($result_class, $this->phptype);
if (!class_exists($class_name)) {
$err =& $this->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
'_wrapResult: result class does not exist '.$class_name);
return $err;
}
$result =& new $class_name($this, $result, $limit, $offset);
if (!MDB2::isResultCommon($result)) {
$err =& $this->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
'_wrapResult: result class is not extended from MDB2_Result_Common');
return $err;
}
if (!empty($types)) {
$err = $result->setResultTypes($types);
if (PEAR::isError($err)) {
$result->free();
return $err;
}
}
}
if ($result_wrap_class === true) {
$result_wrap_class = $this->options['result_wrap_class'];
}
if ($result_wrap_class) {
if (!class_exists($result_wrap_class)) {
$err =& $this->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
'_wrapResult: result wrap class does not exist '.$result_wrap_class);
return $err;
}
$result =& new $result_wrap_class($result, $this->fetchmode);
}
return $result;
}
// }}}
// {{{ setLimit()
/**
* set the range of the next query
*
* @param string $limit number of rows to select
* @param string $offset first row to select
* @return mixed MDB2_OK on success, a MDB2 error on failure
* @access public
*/
function setLimit($limit, $offset = null)
{
if (!$this->supports('limit_queries')) {
return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
'setLimit: limit is not supported by this driver');
}
$limit = (int)$limit;
if ($limit < 0) {
return $this->raiseError(MDB2_ERROR_SYNTAX, null, null,
'setLimit: it was not specified a valid selected range row limit');
}
$this->row_limit = $limit;
if (!is_null($offset)) {
$offset = (int)$offset;
if ($offset < 0) {
return $this->raiseError(MDB2_ERROR_SYNTAX, null, null,
'setLimit: it was not specified a valid first selected range row');
}
$this->row_offset = $offset;
}
return MDB2_OK;
}
// }}}
// {{{ subSelect()
/**
* simple subselect emulation: leaves the query untouched for all RDBMS
* that support subselects
*
* @access public
*
* @param string $query the SQL query for the subselect that may only
* return a column
* @param string $type determines type of the field
*
* @return string the query
*/
function subSelect($query, $type = false)
{
if ($this->supports('sub_selects') === true) {
return $query;
}
if (!$this->supports('sub_selects')) {
return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
'subSelect: method not implemented');
}
$col = $this->queryCol($query, $type);
if (PEAR::isError($col)) {
return $col;
}
if (!is_array($col) || count($col) == 0) {
return 'NULL';
}
if ($type) {
$this->loadModule('Datatype');
return $this->datatype->implodeArray($col, $type);
}
return implode(', ', $col);
}
// }}}
// {{{ replace()
/**
* Execute a SQL REPLACE query. A REPLACE query is identical to a INSERT
* query, except that if there is already a row in the table with the same
* key field values, the REPLACE query just updates its values instead of
* inserting a new row.
*
* The REPLACE type of query does not make part of the SQL standards. Since
* pratically only MySQL implements it natively, this type of query is
* emulated through this method for other DBMS using standard types of
* queries inside a transaction to assure the atomicity of the operation.
*
* @param string $table name of the table on which the REPLACE query will
* be executed.
* @param array $fields associative array that describes the fields and the
* values that will be inserted or updated in the specified table. The
* indexes of the array are the names of all the fields of the table.
* The values of the array are also associative arrays that describe
* the values and other properties of the table fields.
*
* Here follows a list of field properties that need to be specified:
*
* value
* Value to be assigned to the specified field. This value may be
* of specified in database independent type format as this
* function can perform the necessary datatype conversions.
*
* Default: this property is required unless the Null property is
* set to 1.
*
* type
* Name of the type of the field. Currently, all types Metabase
* are supported except for clob and blob.
*
* Default: no type conversion
*
* null
* Boolean property that indicates that the value for this field
* should be set to null.
*
* The default value for fields missing in INSERT queries may be
* specified the definition of a table. Often, the default value
* is already null, but since the REPLACE may be emulated using
* an UPDATE query, make sure that all fields of the table are
* listed in this function argument array.
*
* Default: 0
*
* key
* Boolean property that indicates that this field should be
* handled as a primary key or at least as part of the compound
* unique index of the table that will determine the row that will
* updated if it exists or inserted a new row otherwise.
*
* This function will fail if no key field is specified or if the
* value of a key field is set to null because fields that are
* part of unique index they may not be null.
*
* Default: 0
* @return mixed MDB2_OK on success, a MDB2 error on failure
* @access public
*/
function replace($table, $fields)
{
if (!$this->supports('replace')) {
return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
'replace: replace query is not supported');
}
$count = count($fields);
$condition = $values = array();
for ($colnum = 0, reset($fields); $colnum < $count; next($fields), $colnum++) {
$name = key($fields);
if (isset($fields[$name]['null']) && $fields[$name]['null']) {
$value = 'NULL';
} else {
if (isset($fields[$name]['type'])) {
$value = $this->quote($fields[$name]['value'], $fields[$name]['type']);
} else {
$value = $fields[$name]['value'];
}
}
$values[$name] = $value;
if (isset($fields[$name]['key']) && $fields[$name]['key']) {
if ($value === 'NULL') {
return $this->raiseError(MDB2_ERROR_CANNOT_REPLACE, null, null,
'replace: key value '.$name.' may not be NULL');
}
$condition[] = $name . '=' . $value;
}
}
if (empty($condition)) {
return $this->raiseError(MDB2_ERROR_CANNOT_REPLACE, null, null,
'replace: not specified which fields are keys');
}
$result = null;
$in_transaction = $this->in_transaction;
if (!$in_transaction && PEAR::isError($result = $this->beginTransaction())) {
return $result;
}
$condition = ' WHERE '.implode(' AND ', $condition);
$query = "DELETE FROM $table$condition";
$affected_rows = $result = $this->_doQuery($query, true);
if (!PEAR::isError($result)) {
$insert = implode(', ', array_keys($values));
$values = implode(', ', $values);
$query = "INSERT INTO $table ($insert) VALUES ($values)";
$result = $this->_doQuery($query, true);
if (!PEAR::isError($result)) {
$affected_rows += $result;
}
}
if (!$in_transaction) {
if (PEAR::isError($result)) {
$this->rollback();
} else {
$result = $this->commit();
}
}
if (PEAR::isError($result)) {
return $result;
}
return $affected_rows;
}
// }}}
// {{{ prepare()
/**
* Prepares a query for multiple execution with execute().
* With some database backends, this is emulated.
* prepare() requires a generic query as string like
* 'INSERT INTO numbers VALUES(?,?)' or
* 'INSERT INTO numbers VALUES(:foo,:bar)'.
* The ? and :[a-zA-Z] and are placeholders which can be set using
* bindParam() and the query can be send off using the execute() method.
*
* @param string $query the query to prepare
* @param mixed $types array that contains the types of the placeholders
* @param mixed $result_types array that contains the types of the columns in
* the result set
* @return mixed resource handle for the prepared query on success, a MDB2
* error on failure
* @access public
* @see bindParam, execute
*/
function &prepare($query, $types = null, $result_types = null)
{
$this->debug($query, 'prepare');
$positions = array();
$placeholder_type_guess = $placeholder_type = null;
$question = '?';
$colon = ':';
$position = 0;
while ($position < strlen($query)) {
$q_position = strpos($query, $question, $position);
$c_position = strpos($query, $colon, $position);
if ($q_position && $c_position) {
$p_position = min($q_position, $c_position);
} elseif ($q_position) {
$p_position = $q_position;
} elseif ($c_position) {
$p_position = $c_position;
} else {
break;
}
if (is_null($placeholder_type)) {
$placeholder_type_guess = $query[$p_position];
}
if (is_int($quote = strpos($query, "'", $position)) && $quote < $p_position) {
if (!is_int($end_quote = strpos($query, "'", $quote + 1))) {
$err =& $this->raiseError(MDB2_ERROR_SYNTAX, null, null,
'prepare: query with an unterminated text string specified');
return $err;
}
switch ($this->escape_quotes) {
case '':
case "'":
$position = $end_quote + 1;
break;
default:
if ($end_quote == $quote + 1) {
$position = $end_quote + 1;
} else {
if ($query[$end_quote-1] == $this->escape_quotes) {
$position = $end_quote;
} else {
$position = $end_quote + 1;
}
}
break;
}
} elseif ($query[$position] == $placeholder_type_guess) {
if (is_null($placeholder_type)) {
$placeholder_type = $query[$p_position];
$question = $colon = $placeholder_type;
}
if ($placeholder_type == ':') {
$parameter = preg_replace('/^.{'.($position+1).'}([a-z0-9_]+).*$/si', '\\1', $query);
if ($parameter === '') {
$err =& $this->raiseError(MDB2_ERROR_SYNTAX, null, null,
'prepare: named parameter with an empty name');
return $err;
}
$positions[$parameter] = $p_position;
$query = substr_replace($query, '?', $position, strlen($parameter)+1);
} else {
$positions[] = $p_position;
}
$position = $p_position + 1;
} else {
$position = $p_position;
}
}
$class_name = 'MDB2_Statement_'.$this->phptype;
$obj =& new $class_name($this, $positions, $query, $types, $result_types);
return $obj;
}
// }}}
// {{{ quote()
/**
* Convert a text value into a DBMS specific format that is suitable to
* compose query statements.
*
* @param string $value text string value that is intended to be converted.
* @param string $type type to which the value should be converted to
* @return string text string that represents the given argument value in
* a DBMS specific format.
* @access public
*/
function quote($value, $type = null, $quote = true)
{
$result = $this->loadModule('Datatype');
if (PEAR::isError($result)) {
return $result;
}
return $this->datatype->quote($value, $type, $quote);
}
// }}}
// {{{ getDeclaration()
/**
* Obtain DBMS specific SQL code portion needed to declare
* of the given type
*
* @param string $type type to which the value should be converted to
* @param string $name name the field to be declared.
* @param string $field definition of the field
* @return string DBMS specific SQL code portion that should be used to
* declare the specified field.
* @access public
*/
function getDeclaration($type, $name, $field)
{
$result = $this->loadModule('Datatype');
if (PEAR::isError($result)) {
return $result;
}
return $this->datatype->getDeclaration($type, $name, $field);
}
// }}}
// {{{ compareDefinition()
/**
* Obtain an array of changes that may need to applied
*
* @param array $current new definition
* @param array $previous old definition
* @return array containg all changes that will need to be applied
* @access public
*/
function compareDefinition($current, $previous)
{
$result = $this->loadModule('Datatype');
if (PEAR::isError($result)) {
return $result;
}
return $this->datatype->compareDefinition($current, $previous);
}
// }}}
// {{{ supports()
/**
* Tell whether a DB implementation or its backend extension
* supports a given feature.
*
* @param string $feature name of the feature (see the MDB2 class doc)
* @return boolean|string whether this DB implementation supports $feature
* false means no, true means native, 'emulated' means emulated
* @access public
*/
function supports($feature)
{
if (array_key_exists($feature, $this->supported)) {
return $this->supported[$feature];
}
return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
"unknown support feature $feature");
}
// }}}
// {{{ getSequenceName()
/**
* adds sequence name formating to a sequence name
*
* @param string $sqn name of the sequence
* @return string formatted sequence name
* @access public
*/
function getSequenceName($sqn)
{
return sprintf($this->options['seqname_format'],
preg_replace('/[^a-z0-9_]/i', '_', $sqn));
}
// }}}
// {{{ nextID()
/**
* returns the next free id of a sequence
*
* @param string $seq_name name of the sequence
* @param boolean $ondemand when true the seqence is
* automatic created, if it
* not exists
* @return mixed MDB2 Error Object or id
* @access public
*/
function nextID($seq_name, $ondemand = true)
{
return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
'nextID: method not implemented');
}
// }}}
// {{{ lastInsertID()
/**
* returns the autoincrement ID if supported or $id
*
* @param mixed $id value as returned by getBeforeId()
* @param string $table name of the table into which a new row was inserted
* @return mixed MDB2 Error Object or id
* @access public
*/
function lastInsertID($table = null, $field = null)
{
$seq = $table.(empty($field) ? '' : '_'.$field);
return $this->currID($seq);
}
// }}}
// {{{ currID()
/**
* returns the current id of a sequence
*
* @param string $seq_name name of the sequence
* @return mixed MDB2 Error Object or id
* @access public
*/
function currID($seq_name)
{
$this->warnings[] = 'database does not support getting current
sequence value, the sequence value was incremented';
return $this->nextID($seq_name);
}
// }}}
// {{{ queryOne()
/**
* Execute the specified query, fetch the value from the first column of
* the first row of the result set and then frees
* the result set.
*
* @param string $query the SELECT query statement to be executed.
* @param string $type optional argument that specifies the expected
* datatype of the result set field, so that an eventual conversion
* may be performed. The default datatype is text, meaning that no
* conversion is performed
* @return mixed MDB2_OK or field value on success, a MDB2 error on failure
* @access public
*/
function queryOne($query, $type = null)
{
$result = $this->query($query, $type);
if (!MDB2::isResultCommon($result)) {
return $result;
}
$one = $result->fetchOne();
$result->free();
return $one;
}
// }}}
// {{{ queryRow()
/**
* Execute the specified query, fetch the values from the first
* row of the result set into an array and then frees
* the result set.
*
* @param string $query the SELECT query statement to be executed.
* @param array $types optional array argument that specifies a list of
* expected datatypes of the result set columns, so that the eventual
* conversions may be performed. The default list of datatypes is
* empty, meaning that no conversion is performed.
* @param int $fetchmode how the array data should be indexed
* @return mixed MDB2_OK or data array on success, a MDB2 error on failure
* @access public
*/
function queryRow($query, $types = null, $fetchmode = MDB2_FETCHMODE_DEFAULT)
{
$result = $this->query($query, $types);
if (!MDB2::isResultCommon($result)) {
return $result;
}
$row = $result->fetchRow($fetchmode);
$result->free();
return $row;
}
// }}}
// {{{ queryCol()
/**
* Execute the specified query, fetch the value from the first column of
* each row of the result set into an array and then frees the result set.
*
* @param string $query the SELECT query statement to be executed.
* @param string $type optional argument that specifies the expected
* datatype of the result set field, so that an eventual conversion
* may be performed. The default datatype is text, meaning that no
* conversion is performed
* @param int $colnum the row number to fetch
* @return mixed MDB2_OK or data array on success, a MDB2 error on failure
* @access public
*/
function queryCol($query, $type = null, $colnum = 0)
{
$result = $this->query($query, $type);
if (!MDB2::isResultCommon($result)) {
return $result;
}
$col = $result->fetchCol($colnum);
$result->free();
return $col;
}
// }}}
// {{{ queryAll()
/**
* Execute the specified query, fetch all the rows of the result set into
* a two dimensional array and then frees the result set.
*
* @param string $query the SELECT query statement to be executed.
* @param array $types optional array argument that specifies a list of
* expected datatypes of the result set columns, so that the eventual
* conversions may be performed. The default list of datatypes is
* empty, meaning that no conversion is performed.
* @param int $fetchmode how the array data should be indexed
* @param boolean $rekey if set to true, the $all will have the first
* column as its first dimension
* @param boolean $force_array used only when the query returns exactly
* two columns. If true, the values of the returned array will be
* one-element arrays instead of scalars.
* @param boolean $group if true, the values of the returned array is
* wrapped in another array. If the same key value (in the first
* column) repeats itself, the values will be appended to this array
* instead of overwriting the existing values.
* @return mixed MDB2_OK or data array on success, a MDB2 error on failure
* @access public
*/
function queryAll($query, $types = null, $fetchmode = MDB2_FETCHMODE_DEFAULT,
$rekey = false, $force_array = false, $group = false)
{
$result = $this->query($query, $types);
if (!MDB2::isResultCommon($result)) {
return $result;
}
$all = $result->fetchAll($fetchmode, $rekey, $force_array, $group);
$result->free();
return $all;
}
}
class MDB2_Result
{
}
class MDB2_Result_Common extends MDB2_Result
{
var $db;
var $result;
var $rownum = -1;
var $types;
var $values;
var $offset;
var $offset_count = 0;
var $limit;
var $column_names;
// {{{ constructor
/**
* Constructor
*/
function __construct(&$db, &$result, $limit = 0, $offset = 0)
{
$this->db =& $db;
$this->result =& $result;
$this->offset = $offset;
$this->limit = max(0, $limit - 1);
}
function MDB2_Result_Common(&$db, &$result, $limit = 0, $offset = 0)
{
$this->__construct($db, $result, $limit, $offset);
}
// }}}
// {{{ setResultTypes()
/**
* Define the list of types to be associated with the columns of a given
* result set.
*
* This function may be called before invoking fetchRow(), fetchOne(),
* fetchCol() and fetchAll() so that the necessary data type
* conversions are performed on the data to be retrieved by them. If this
* function is not called, the type of all result set columns is assumed
* to be text, thus leading to not perform any conversions.
*
* @param string $types array variable that lists the
* data types to be expected in the result set columns. If this array
* contains less types than the number of columns that are returned
* in the result set, the remaining columns are assumed to be of the
* type text. Currently, the types clob and blob are not fully
* supported.
* @return mixed MDB2_OK on success, a MDB2 error on failure
* @access public
*/
function setResultTypes($types)
{
$load = $this->db->loadModule('Datatype');
if (PEAR::isError($load)) {
return $load;
}
return $this->db->datatype->setResultTypes($this, $types);
}
// }}}
// {{{ seek()
/**
* seek to a specific row in a result set
*
* @param int $rownum number of the row where the data can be found
* @return mixed MDB2_OK on success, a MDB2 error on failure
* @access public
*/
function seek($rownum = 0)
{
$target_rownum = $rownum - 1;
if ($this->rownum > $target_rownum) {
return $this->db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
'seek: seeking to previous rows not implemented');
}
while ($this->rownum < $target_rownum) {
$this->fetchRow();
}
return MDB2_OK;
}
// }}}
// {{{ fetchRow()
/**
* Fetch and return a row of data
*
* @param int $fetchmode how the array data should be indexed
* @param int $rownum number of the row where the data can be found
* @return int data array on success, a MDB2 error on failure
* @access public
*/
function &fetchRow($fetchmode = MDB2_FETCHMODE_DEFAULT, $rownum = null)
{
$err =& $this->db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
'fetch: method not implemented');
return $err;
}
// }}}
// {{{ fetchOne()
/**
* fetch single column from the first row from a result set
*
* @param int $colnum the column number to fetch
* @return string data on success, a MDB2 error on failure
* @access public
*/
function fetchOne($colnum = 0)
{
$fetchmode = is_numeric($colnum) ? MDB2_FETCHMODE_ORDERED : MDB2_FETCHMODE_ASSOC;
$row = $this->fetchRow($fetchmode);
if (!is_array($row) || PEAR::isError($row)) {
return $row;
}
if (!array_key_exists($colnum, $row)) {
return $this->db->raiseError(MDB2_ERROR_TRUNCATED);
}
return $row[$colnum];
}
// }}}
// {{{ fetchCol()
/**
* Fetch and return a column of data (it uses current for that)
*
* @param int $colnum the column number to fetch
* @return mixed data array on success, a MDB2 error on failure
* @access public
*/
function fetchCol($colnum = 0)
{
$column = array();
$fetchmode = is_numeric($colnum) ? MDB2_FETCHMODE_ORDERED : MDB2_FETCHMODE_ASSOC;
$row = $this->fetchRow($fetchmode);
if (is_array($row)) {
if (!array_key_exists($colnum, $row)) {
return $this->db->raiseError(MDB2_ERROR_TRUNCATED);
}
do {
$column[] = $row[$colnum];
} while (is_array($row = $this->fetchRow($fetchmode)));
}
if (PEAR::isError($row)) {
return $row;
}
return $column;
}
// }}}
// {{{ fetchAll()
/**
* Fetch and return a column of data (it uses fetchRow for that)
*
* @param int $fetchmode the fetch mode to use:
* + MDB2_FETCHMODE_ORDERED
* + MDB2_FETCHMODE_ASSOC
* + MDB2_FETCHMODE_ORDERED | MDB2_FETCHMODE_FLIPPED
* + MDB2_FETCHMODE_ASSOC | MDB2_FETCHMODE_FLIPPED
* @param boolean $rekey if set to true, the $all will have the first
* column as its first dimension
* @param boolean $force_array used only when the query returns exactly
* two columns. If true, the values of the returned array will be
* one-element arrays instead of scalars.
* @param boolean $group if true, the values of the returned array is
* wrapped in another array. If the same key value (in the first
* column) repeats itself, the values will be appended to this array
* instead of overwriting the existing values.
* @return mixed data array on success, a MDB2 error on failure
* @access public
* @see getAssoc()
*/
function fetchAll($fetchmode = MDB2_FETCHMODE_DEFAULT, $rekey = false,
$force_array = false, $group = false)
{
$all = array();
$row = $this->fetchRow($fetchmode);
if (PEAR::isError($row)) {
return $row;
} elseif (!$row) {
return $all;
}
$shift_array = $rekey ? false : null;
if (!is_null($shift_array)) {
if (is_object($row)) {
$colnum = count(get_object_vars($row));
} else {
$colnum = count($row);
}
if ($colnum < 2) {
return $this->db->raiseError(MDB2_ERROR_TRUNCATED);
}
$shift_array = (!$force_array && $colnum == 2);
}
if ($rekey) {
do {
if (is_object($row)) {
$arr = get_object_vars($row);
$key = reset($arr);
unset($row->{$key});
} else {
if ($fetchmode & MDB2_FETCHMODE_ASSOC) {
$key = reset($row);
unset($row[key($row)]);
} else {
$key = array_shift($row);
}
if ($shift_array) {
$row = array_shift($row);
}
}
if ($group) {
$all[$key][] = $row;
} else {
$all[$key] = $row;
}
} while (($row = $this->fetchRow($fetchmode)));
} elseif ($fetchmode & MDB2_FETCHMODE_FLIPPED) {
do {
foreach ($row as $key => $val) {
$all[$key][] = $val;
}
} while (($row = $this->fetchRow($fetchmode)));
} else {
do {
$all[] = $row;
} while (($row = $this->fetchRow($fetchmode)));
}
return $all;
}
// }}}
// {{{ rowCount()
/**
* returns the actual row number that was last fetched (count from 0)
* @return integer
*/
function rowCount()
{
return $this->rownum + 1;
}
// }}}
// {{{ numRows()
/**
* returns the number of rows in a result object
*
* @return mixed MDB2 Error Object or the number of rows
* @access public
*/
function numRows()
{
return $this->db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
'numRows: method not implemented');
}
// }}}
// {{{ nextResult()
/**
* Move the internal result pointer to the next available result
*
* @param a valid result resource
* @return true on success or an error object on failure
* @access public
*/
function nextResult()
{
return $this->db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
'nextResult: method not implemented');
}
// }}}
// {{{ getColumnNames()
/**
* Retrieve the names of columns returned by the DBMS in a query result or
* from the cache.
*
* @return mixed associative array variable
* that holds the names of columns. The indexes of the array are
* the column names mapped to lower case and the values are the
* respective numbers of the columns starting from 0. Some DBMS may
* not return any columns when the result set does not contain any
* rows.
* a MDB2 error on failure
* @access public
*/
function getColumnNames()
{
if (!isset($this->column_names)) {
$result = $this->_getColumnNames();
if (PEAR::isError($result)) {
return $result;
}
$this->column_names = $result;
}
return $this->column_names;
}
// }}}
// {{{ _getColumnNames()
/**
* Retrieve the names of columns returned by the DBMS in a query result.
*
* @return mixed associative array variable
* that holds the names of columns. The indexes of the array are
* the column names mapped to lower case and the values are the
* respective numbers of the columns starting from 0. Some DBMS may
* not return any columns when the result set does not contain any
* rows.
* a MDB2 error on failure
* @access private
*/
function _getColumnNames()
{
return $this->db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
'getColumnNames: method not implemented');
}
// }}}
// {{{ numCols()
/**
* Count the number of columns returned by the DBMS in a query result.
*
* @return mixed integer value with the number of columns, a MDB2 error
* on failure
* @access public
*/
function numCols()
{
return $this->db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
'numCols: method not implemented');
}
// }}}
// {{{ getResource()
/**
* return the resource associated with the result object
*
* @return resource
* @access public
*/
function getResource()
{
return $this->result;
}
// }}}
// {{{ bindColumn()
/**
* Set bind variable to a column.
*
* @param int $column
* @param mixed $value
* @param string $type specifies the type of the field
* @return mixed MDB2_OK on success, a MDB2 error on failure
* @access public
*/
function bindColumn($column, &$value, $type = null)
{
if (!is_numeric($column)) {
$column_names = $this->getColumnNames();
if ($this->db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
if ($this->db->options['field_case'] == CASE_LOWER) {
$column = strtolower($column);
} else {
$column = strtoupper($column);
}
}
$column = $column_names[$column];
}
$this->values[$column] =& $value;
if (!is_null($type)) {
$this->types[$column] = $type;
}
return MDB2_OK;
}
// }}}
// {{{ _assignBindColumns()
/**
* Bind a variable to a value in the result row.
*
* @param array $row
* @return mixed MDB2_OK on success, a MDB2 error on failure
* @access private
*/
function _assignBindColumns($row)
{
$row = array_values($row);
foreach ($row as $column => $value) {
if (array_key_exists($column, $this->values)) {
$this->values[$column] = $value;
}
}
return MDB2_OK;
}
// }}}
// {{{ free()
/**
* Free the internal resources associated with result.
*
* @return boolean true on success, false if result is invalid
* @access public
*/
function free()
{
$this->result = null;
return MDB2_OK;
}
}
// }}}
// {{{ class MDB2_Row
/**
* Pear MDB2 Row Object
* @see MDB2_Driver_Common::setFetchMode()
*/
class MDB2_Row
{
// {{{ constructor
/**
* constructor
*
* @param resource row data as array
*/
function __construct(&$row)
{
foreach ($row as $key => $value) {
$this->$key = &$row[$key];
}
}
function MDB2_Row(&$row)
{
$this->__construct($row);
}
}
class MDB2_Statement_Common
{
var $db;
var $statement;
var $query;
var $result_types;
var $types;
var $values;
var $row_limit;
var $row_offset;
// {{{ constructor
/**
* Constructor
*/
function __construct(&$db, &$statement, $query, $types, $result_types, $limit = null, $offset = null)
{
$this->db =& $db;
$this->statement =& $statement;
$this->query = $query;
$this->types = (array)$types;
$this->result_types = (array)$result_types;
$this->row_limit = $limit;
$this->row_offset = $offset;
}
function MDB2_Statement_Common(&$db, &$statement, $query, $types, $result_types, $limit = null, $offset = null)
{
$this->__construct($db, $statement, $query, $types, $result_types, $limit, $offset);
}
// }}}
// {{{ bindParam()
/**
* Set the value of a parameter of a prepared query.
*
* @param int $parameter the order number of the parameter in the query
* statement. The order number of the first parameter is 1.
* @param mixed $value value that is meant to be assigned to specified
* parameter. The type of the value depends on the $type argument.
* @param string $type specifies the type of the field
* @return mixed MDB2_OK on success, a MDB2 error on failure
* @access public
*/
function bindParam($parameter, &$value, $type = null)
{
if (!is_numeric($parameter)) {
$parameter = preg_replace('/^:(.*)$/', '\\1', $parameter);
}
$this->values[$parameter] =& $value;
if (!is_null($type)) {
$this->types[$parameter] = $type;
}
return MDB2_OK;
}
// }}}
// {{{ bindParamArray()
/**
* Set the values of multiple a parameter of a prepared query in bulk.
*
* @param array $values array thats specifies all necessary infromation
* for bindParam() the array elements must use keys corresponding to
* the number of the position of the parameter.
* @param array $types specifies the types of the fields
* @return mixed MDB2_OK on success, a MDB2 error on failure
* @access public
* @see bindParam()
*/
function bindParamArray(&$values, $types = null)
{
$types = is_array($types) ? array_values($types) : array_fill(0, count($values), null);
$parameters = array_keys($values);
foreach ($parameters as $key => $parameter) {
$this->bindParam($parameter, $values[$parameter], $types[$key]);
}
return MDB2_OK;
}
// }}}
// {{{ execute()
/**
* Execute a prepared query statement.
*
* @param array $values array thats specifies all necessary infromation
* for bindParam() the array elements must use keys corresponding to
* the number of the position of the parameter.
* @param mixed $result_class string which specifies which result class to use
* @param mixed $result_wrap_class string which specifies which class to wrap results in
* @return mixed a result handle or MDB2_OK on success, a MDB2 error on failure
* @access public
*/
function &execute($values = null, $result_class = true, $result_wrap_class = false)
{
if (!empty($values)) {
$this->bindParamArray($values);
}
$result =& $this->_execute($result_class, $result_wrap_class);
if (is_numeric($result)) {
$this->rownum = $result - 1;
}
return $result;
}
// }}}
// {{{ _execute()
/**
* Execute a prepared query statement helper method.
*
* @param mixed $result_class string which specifies which result class to use
* @param mixed $result_wrap_class string which specifies which class to wrap results in
* @return mixed a result handle or MDB2_OK on success, a MDB2 error on failure
* @access private
*/
function &_execute($result_class = true, $result_wrap_class = false)
{
$query = '';
$last_position = $i = 0;
foreach ($this->values as $parameter => $value) {
$current_position = $this->statement[$parameter];
$query.= substr($this->query, $last_position, $current_position - $last_position);
if (!isset($value)) {
$value_quoted = 'NULL';
} else {
$type = array_key_exists($parameter, $this->types) ? $this->types[$parameter] : null;
$value_quoted = $this->db->quote($value, $type);
if (PEAR::isError($value_quoted)) {
return $value_quoted;
}
}
$query.= $value_quoted;
$last_position = $current_position + 1;
++$i;
}
$query.= substr($this->query, $last_position);
$this->db->row_offset = $this->row_offset;
$this->db->row_limit = $this->row_limit;
$result =& $this->db->query($query, $this->result_types, $result_class, $result_wrap_class);
return $result;
}
// }}}
// {{{ free()
/**
* Release resources allocated for the specified prepared query.
*
* @return mixed MDB2_OK on success, a MDB2 error on failure
* @access public
*/
function free()
{
return MDB2_OK;
}
}
class MDB2_Module_Common
{
/**
* contains the key to the global MDB2 instance array of the associated
* MDB2 instance
*
* @var integer
* @access protected
*/
var $db_index;
// {{{ constructor
/**
* Constructor
*/
function __construct($db_index)
{
$this->db_index = $db_index;
}
function MDB2_Module_Common($db_index)
{
$this->__construct($db_index);
}
// }}}
// {{{ getDBInstance()
/**
* get the instance of MDB2 associated with the module instance
*
* @return object MDB2 instance or a MDB2 error on failure
* @access public
*/
function &getDBInstance()
{
if (isset($GLOBALS['_MDB2_databases'][$this->db_index])) {
$result =& $GLOBALS['_MDB2_databases'][$this->db_index];
} else {
$result =& MDB2::raiseError(MDB2_ERROR, null, null, 'could not find MDB2 instance');
}
return $result;
}
}
// }}}
// {{{ MDB2_closeOpenTransactions()
/**
* close any open transactions form persistant connections
*
* @return void
* @access public
*/
function MDB2_closeOpenTransactions()
{
reset($GLOBALS['_MDB2_databases']);
while (next($GLOBALS['_MDB2_databases'])) {
$key = key($GLOBALS['_MDB2_databases']);
if ($GLOBALS['_MDB2_databases'][$key]->opened_persistent
&& $GLOBALS['_MDB2_databases'][$key]->in_transaction
) {
$GLOBALS['_MDB2_databases'][$key]->rollback();
}
}
}
// }}}
// {{{ MDB2_defaultDebugOutput()
/**
* default debug output handler
*
* @param object $db reference to an MDB2 database object
* @param string $message message that should be appended to the debug
* variable
* @return string the corresponding error message, of false
* if the error code was unknown
* @access public
*/
function MDB2_defaultDebugOutput(&$db, $scope, $message)
{
$db->debug_output.= $scope.'('.$db->db_index.'): ';
$db->debug_output.= $message.$db->getOption('log_line_break');
}
?>

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