1700 lines
62 KiB
PHP
1700 lines
62 KiB
PHP
<?php
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// vim: set et ts=4 sw=4 fdm=marker:
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// +----------------------------------------------------------------------+
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// | PHP versions 4 and 5 |
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// +----------------------------------------------------------------------+
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// | Copyright (c) 1998-2008 Manuel Lemos, Tomas V.V.Cox, |
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// | Stig. S. Bakken, Lukas Smith |
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// | All rights reserved. |
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// +----------------------------------------------------------------------+
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// | MDB2 is a merge of PEAR DB and Metabases that provides a unified DB |
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// | API as well as database abstraction for PHP applications. |
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// | This LICENSE is in the BSD license style. |
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// | |
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// | Redistribution and use in source and binary forms, with or without |
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// | modification, are permitted provided that the following conditions |
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// | are met: |
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// | |
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// | Redistributions of source code must retain the above copyright |
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// | notice, this list of conditions and the following disclaimer. |
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// | |
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// | Redistributions in binary form must reproduce the above copyright |
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// | notice, this list of conditions and the following disclaimer in the |
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// | documentation and/or other materials provided with the distribution. |
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// | |
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// | Neither the name of Manuel Lemos, Tomas V.V.Cox, Stig. S. Bakken, |
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// | Lukas Smith nor the names of his contributors may be used to endorse |
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// | or promote products derived from this software without specific prior|
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// | written permission. |
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// | |
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// | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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// | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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// | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
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// | FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
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// | REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
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// | INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
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// | BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS|
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// | OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED |
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// | AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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// | LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY|
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// | WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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// | POSSIBILITY OF SUCH DAMAGE. |
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// +----------------------------------------------------------------------+
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// | Author: Lukas Smith <smith@pooteeweet.org> |
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// +----------------------------------------------------------------------+
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//
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// $Id: mysql.php,v 1.214 2008/11/16 21:45:08 quipo Exp $
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//
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/**
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* MDB2 MySQL driver
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*
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* @package MDB2
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* @category Database
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* @author Lukas Smith <smith@pooteeweet.org>
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*/
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class MDB2_Driver_mysql extends MDB2_Driver_Common
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{
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// {{{ properties
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var $string_quoting = array('start' => "'", 'end' => "'", 'escape' => '\\', 'escape_pattern' => '\\');
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var $identifier_quoting = array('start' => '`', 'end' => '`', 'escape' => '`');
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var $sql_comments = array(
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array('start' => '-- ', 'end' => "\n", 'escape' => false),
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array('start' => '#', 'end' => "\n", 'escape' => false),
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array('start' => '/*', 'end' => '*/', 'escape' => false),
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);
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var $server_capabilities_checked = false;
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var $start_transaction = false;
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var $varchar_max_length = 255;
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// }}}
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// {{{ constructor
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/**
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* Constructor
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*/
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function __construct()
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{
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parent::__construct();
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$this->phptype = 'mysql';
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$this->dbsyntax = 'mysql';
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$this->supported['sequences'] = 'emulated';
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$this->supported['indexes'] = true;
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$this->supported['affected_rows'] = true;
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$this->supported['transactions'] = false;
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$this->supported['savepoints'] = false;
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$this->supported['summary_functions'] = true;
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$this->supported['order_by_text'] = true;
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$this->supported['current_id'] = 'emulated';
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$this->supported['limit_queries'] = true;
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$this->supported['LOBs'] = true;
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$this->supported['replace'] = true;
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$this->supported['sub_selects'] = 'emulated';
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$this->supported['triggers'] = false;
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$this->supported['auto_increment'] = true;
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$this->supported['primary_key'] = true;
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$this->supported['result_introspection'] = true;
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$this->supported['prepared_statements'] = 'emulated';
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$this->supported['identifier_quoting'] = true;
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$this->supported['pattern_escaping'] = true;
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$this->supported['new_link'] = true;
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$this->options['DBA_username'] = false;
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$this->options['DBA_password'] = false;
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$this->options['default_table_type'] = '';
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$this->options['max_identifiers_length'] = 64;
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$this->_reCheckSupportedOptions();
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}
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// }}}
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// {{{ _reCheckSupportedOptions()
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/**
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* If the user changes certain options, other capabilities may depend
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* on the new settings, so we need to check them (again).
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*
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* @access private
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*/
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function _reCheckSupportedOptions()
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{
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$this->supported['transactions'] = $this->options['use_transactions'];
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$this->supported['savepoints'] = $this->options['use_transactions'];
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if ($this->options['default_table_type']) {
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switch (strtoupper($this->options['default_table_type'])) {
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case 'BLACKHOLE':
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case 'MEMORY':
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case 'ARCHIVE':
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case 'CSV':
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case 'HEAP':
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case 'ISAM':
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case 'MERGE':
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case 'MRG_ISAM':
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case 'ISAM':
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case 'MRG_MYISAM':
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case 'MYISAM':
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$this->supported['savepoints'] = false;
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$this->supported['transactions'] = false;
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$this->warnings[] = $this->options['default_table_type'] .
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' is not a supported default table type';
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break;
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}
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}
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}
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// }}}
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// {{{ function setOption($option, $value)
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/**
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* set the option for the db class
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*
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* @param string option name
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* @param mixed value for the option
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*
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* @return mixed MDB2_OK or MDB2 Error Object
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*
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* @access public
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*/
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function setOption($option, $value)
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{
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$res = parent::setOption($option, $value);
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$this->_reCheckSupportedOptions();
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}
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// }}}
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// {{{ errorInfo()
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/**
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* This method is used to collect information about an error
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*
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* @param integer $error
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* @return array
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* @access public
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*/
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function errorInfo($error = null)
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{
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if ($this->connection) {
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$native_code = @mysql_errno($this->connection);
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$native_msg = @mysql_error($this->connection);
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} else {
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$native_code = @mysql_errno();
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$native_msg = @mysql_error();
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}
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if (is_null($error)) {
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static $ecode_map;
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if (empty($ecode_map)) {
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$ecode_map = array(
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1000 => MDB2_ERROR_INVALID, //hashchk
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1001 => MDB2_ERROR_INVALID, //isamchk
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1004 => MDB2_ERROR_CANNOT_CREATE,
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1005 => MDB2_ERROR_CANNOT_CREATE,
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1006 => MDB2_ERROR_CANNOT_CREATE,
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1007 => MDB2_ERROR_ALREADY_EXISTS,
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1008 => MDB2_ERROR_CANNOT_DROP,
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1009 => MDB2_ERROR_CANNOT_DROP,
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1010 => MDB2_ERROR_CANNOT_DROP,
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1011 => MDB2_ERROR_CANNOT_DELETE,
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1022 => MDB2_ERROR_ALREADY_EXISTS,
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1029 => MDB2_ERROR_NOT_FOUND,
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1032 => MDB2_ERROR_NOT_FOUND,
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1044 => MDB2_ERROR_ACCESS_VIOLATION,
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1045 => MDB2_ERROR_ACCESS_VIOLATION,
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1046 => MDB2_ERROR_NODBSELECTED,
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1048 => MDB2_ERROR_CONSTRAINT,
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1049 => MDB2_ERROR_NOSUCHDB,
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1050 => MDB2_ERROR_ALREADY_EXISTS,
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1051 => MDB2_ERROR_NOSUCHTABLE,
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1054 => MDB2_ERROR_NOSUCHFIELD,
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1060 => MDB2_ERROR_ALREADY_EXISTS,
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1061 => MDB2_ERROR_ALREADY_EXISTS,
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1062 => MDB2_ERROR_ALREADY_EXISTS,
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1064 => MDB2_ERROR_SYNTAX,
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1067 => MDB2_ERROR_INVALID,
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1072 => MDB2_ERROR_NOT_FOUND,
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1086 => MDB2_ERROR_ALREADY_EXISTS,
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1091 => MDB2_ERROR_NOT_FOUND,
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1100 => MDB2_ERROR_NOT_LOCKED,
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1109 => MDB2_ERROR_NOT_FOUND,
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1125 => MDB2_ERROR_ALREADY_EXISTS,
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1136 => MDB2_ERROR_VALUE_COUNT_ON_ROW,
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1138 => MDB2_ERROR_INVALID,
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1142 => MDB2_ERROR_ACCESS_VIOLATION,
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1143 => MDB2_ERROR_ACCESS_VIOLATION,
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1146 => MDB2_ERROR_NOSUCHTABLE,
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1149 => MDB2_ERROR_SYNTAX,
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1169 => MDB2_ERROR_CONSTRAINT,
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1176 => MDB2_ERROR_NOT_FOUND,
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1177 => MDB2_ERROR_NOSUCHTABLE,
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1213 => MDB2_ERROR_DEADLOCK,
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1216 => MDB2_ERROR_CONSTRAINT,
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1217 => MDB2_ERROR_CONSTRAINT,
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1227 => MDB2_ERROR_ACCESS_VIOLATION,
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1235 => MDB2_ERROR_CANNOT_CREATE,
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1299 => MDB2_ERROR_INVALID_DATE,
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1300 => MDB2_ERROR_INVALID,
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1304 => MDB2_ERROR_ALREADY_EXISTS,
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1305 => MDB2_ERROR_NOT_FOUND,
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1306 => MDB2_ERROR_CANNOT_DROP,
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1307 => MDB2_ERROR_CANNOT_CREATE,
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1334 => MDB2_ERROR_CANNOT_ALTER,
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1339 => MDB2_ERROR_NOT_FOUND,
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1356 => MDB2_ERROR_INVALID,
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1359 => MDB2_ERROR_ALREADY_EXISTS,
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1360 => MDB2_ERROR_NOT_FOUND,
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1363 => MDB2_ERROR_NOT_FOUND,
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1365 => MDB2_ERROR_DIVZERO,
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1451 => MDB2_ERROR_CONSTRAINT,
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1452 => MDB2_ERROR_CONSTRAINT,
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1542 => MDB2_ERROR_CANNOT_DROP,
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1546 => MDB2_ERROR_CONSTRAINT,
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1582 => MDB2_ERROR_CONSTRAINT,
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2003 => MDB2_ERROR_CONNECT_FAILED,
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2019 => MDB2_ERROR_INVALID,
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);
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}
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if ($this->options['portability'] & MDB2_PORTABILITY_ERRORS) {
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$ecode_map[1022] = MDB2_ERROR_CONSTRAINT;
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$ecode_map[1048] = MDB2_ERROR_CONSTRAINT_NOT_NULL;
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$ecode_map[1062] = MDB2_ERROR_CONSTRAINT;
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} else {
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// Doing this in case mode changes during runtime.
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$ecode_map[1022] = MDB2_ERROR_ALREADY_EXISTS;
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$ecode_map[1048] = MDB2_ERROR_CONSTRAINT;
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$ecode_map[1062] = MDB2_ERROR_ALREADY_EXISTS;
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}
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if (isset($ecode_map[$native_code])) {
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$error = $ecode_map[$native_code];
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}
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}
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return array($error, $native_code, $native_msg);
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}
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// }}}
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// {{{ escape()
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/**
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* Quotes a string so it can be safely used in a query. It will quote
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* the text so it can safely be used within a query.
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*
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* @param string the input string to quote
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* @param bool escape wildcards
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*
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* @return string quoted string
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*
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* @access public
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*/
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function escape($text, $escape_wildcards = false)
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{
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if ($escape_wildcards) {
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$text = $this->escapePattern($text);
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}
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$connection = $this->getConnection();
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if (PEAR::isError($connection)) {
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return $connection;
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}
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$text = @mysql_real_escape_string($text, $connection);
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return $text;
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}
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// }}}
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// {{{ beginTransaction()
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/**
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* Start a transaction or set a savepoint.
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*
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* @param string name of a savepoint to set
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* @return mixed MDB2_OK on success, a MDB2 error on failure
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*
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* @access public
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*/
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function beginTransaction($savepoint = null)
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{
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$this->debug('Starting transaction/savepoint', __FUNCTION__, array('is_manip' => true, 'savepoint' => $savepoint));
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$this->_getServerCapabilities();
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if (!is_null($savepoint)) {
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if (!$this->supports('savepoints')) {
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return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
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'savepoints are not supported', __FUNCTION__);
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}
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if (!$this->in_transaction) {
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return $this->raiseError(MDB2_ERROR_INVALID, null, null,
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'savepoint cannot be released when changes are auto committed', __FUNCTION__);
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}
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$query = 'SAVEPOINT '.$savepoint;
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return $this->_doQuery($query, true);
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} elseif ($this->in_transaction) {
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return MDB2_OK; //nothing to do
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}
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if (!$this->destructor_registered && $this->opened_persistent) {
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$this->destructor_registered = true;
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register_shutdown_function('MDB2_closeOpenTransactions');
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}
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$query = $this->start_transaction ? 'START TRANSACTION' : 'SET AUTOCOMMIT = 0';
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$result =& $this->_doQuery($query, true);
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if (PEAR::isError($result)) {
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return $result;
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}
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$this->in_transaction = true;
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return MDB2_OK;
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}
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// }}}
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// {{{ commit()
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/**
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* Commit the database changes done during a transaction that is in
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* progress or release a savepoint. This function may only be called when
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* auto-committing is disabled, otherwise it will fail. Therefore, a new
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* transaction is implicitly started after committing the pending changes.
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*
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* @param string name of a savepoint to release
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* @return mixed MDB2_OK on success, a MDB2 error on failure
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*
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* @access public
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*/
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function commit($savepoint = null)
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{
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$this->debug('Committing transaction/savepoint', __FUNCTION__, array('is_manip' => true, 'savepoint' => $savepoint));
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if (!$this->in_transaction) {
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return $this->raiseError(MDB2_ERROR_INVALID, null, null,
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'commit/release savepoint cannot be done changes are auto committed', __FUNCTION__);
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}
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if (!is_null($savepoint)) {
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if (!$this->supports('savepoints')) {
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return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
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'savepoints are not supported', __FUNCTION__);
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}
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$server_info = $this->getServerVersion();
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if (version_compare($server_info['major'].'.'.$server_info['minor'].'.'.$server_info['patch'], '5.0.3', '<')) {
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return MDB2_OK;
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}
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$query = 'RELEASE SAVEPOINT '.$savepoint;
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return $this->_doQuery($query, true);
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}
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if (!$this->supports('transactions')) {
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return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
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'transactions are not supported', __FUNCTION__);
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}
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$result =& $this->_doQuery('COMMIT', true);
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if (PEAR::isError($result)) {
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return $result;
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}
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if (!$this->start_transaction) {
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$query = 'SET AUTOCOMMIT = 1';
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$result =& $this->_doQuery($query, true);
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if (PEAR::isError($result)) {
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return $result;
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}
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}
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$this->in_transaction = false;
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return MDB2_OK;
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}
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// }}}
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// {{{ rollback()
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/**
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* Cancel any database changes done during a transaction or since a specific
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* savepoint that is in progress. This function may only be called when
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* auto-committing is disabled, otherwise it will fail. Therefore, a new
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* transaction is implicitly started after canceling the pending changes.
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*
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* @param string name of a savepoint to rollback to
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* @return mixed MDB2_OK on success, a MDB2 error on failure
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*
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* @access public
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*/
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function rollback($savepoint = null)
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{
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$this->debug('Rolling back transaction/savepoint', __FUNCTION__, array('is_manip' => true, 'savepoint' => $savepoint));
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if (!$this->in_transaction) {
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return $this->raiseError(MDB2_ERROR_INVALID, null, null,
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'rollback cannot be done changes are auto committed', __FUNCTION__);
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}
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if (!is_null($savepoint)) {
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if (!$this->supports('savepoints')) {
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return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
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'savepoints are not supported', __FUNCTION__);
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}
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$query = 'ROLLBACK TO SAVEPOINT '.$savepoint;
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return $this->_doQuery($query, true);
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}
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$query = 'ROLLBACK';
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$result =& $this->_doQuery($query, true);
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if (PEAR::isError($result)) {
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return $result;
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}
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if (!$this->start_transaction) {
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$query = 'SET AUTOCOMMIT = 1';
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$result =& $this->_doQuery($query, true);
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if (PEAR::isError($result)) {
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return $result;
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}
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}
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$this->in_transaction = false;
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return MDB2_OK;
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}
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// }}}
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// {{{ function setTransactionIsolation()
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/**
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* Set the transacton isolation level.
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*
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* @param string standard isolation level
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* READ UNCOMMITTED (allows dirty reads)
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* READ COMMITTED (prevents dirty reads)
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* REPEATABLE READ (prevents nonrepeatable reads)
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* SERIALIZABLE (prevents phantom reads)
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* @return mixed MDB2_OK on success, a MDB2 error on failure
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*
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* @access public
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* @since 2.1.1
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*/
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function setTransactionIsolation($isolation)
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{
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$this->debug('Setting transaction isolation level', __FUNCTION__, array('is_manip' => true));
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if (!$this->supports('transactions')) {
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return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
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'transactions are not supported', __FUNCTION__);
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}
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switch ($isolation) {
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case 'READ UNCOMMITTED':
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case 'READ COMMITTED':
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case 'REPEATABLE READ':
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case 'SERIALIZABLE':
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break;
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default:
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return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
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'isolation level is not supported: '.$isolation, __FUNCTION__);
|
|
}
|
|
|
|
$query = "SET SESSION TRANSACTION ISOLATION LEVEL $isolation";
|
|
return $this->_doQuery($query, true);
|
|
}
|
|
|
|
// }}}
|
|
// {{{ _doConnect()
|
|
|
|
/**
|
|
* do the grunt work of the connect
|
|
*
|
|
* @return connection on success or MDB2 Error Object on failure
|
|
* @access protected
|
|
*/
|
|
function _doConnect($username, $password, $persistent = false)
|
|
{
|
|
if (!PEAR::loadExtension($this->phptype)) {
|
|
return $this->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
|
|
'extension '.$this->phptype.' is not compiled into PHP', __FUNCTION__);
|
|
}
|
|
|
|
$params = array();
|
|
if ($this->dsn['protocol'] && $this->dsn['protocol'] == 'unix') {
|
|
$params[0] = ':' . $this->dsn['socket'];
|
|
} else {
|
|
$params[0] = $this->dsn['hostspec'] ? $this->dsn['hostspec']
|
|
: 'localhost';
|
|
if ($this->dsn['port']) {
|
|
$params[0].= ':' . $this->dsn['port'];
|
|
}
|
|
}
|
|
$params[] = $username ? $username : null;
|
|
$params[] = $password ? $password : null;
|
|
if (!$persistent) {
|
|
if ($this->_isNewLinkSet()) {
|
|
$params[] = true;
|
|
} else {
|
|
$params[] = false;
|
|
}
|
|
}
|
|
if (version_compare(phpversion(), '4.3.0', '>=')) {
|
|
$params[] = isset($this->dsn['client_flags'])
|
|
? $this->dsn['client_flags'] : null;
|
|
}
|
|
$connect_function = $persistent ? 'mysql_pconnect' : 'mysql_connect';
|
|
|
|
$connection = @call_user_func_array($connect_function, $params);
|
|
if (!$connection) {
|
|
if (($err = @mysql_error()) != '') {
|
|
return $this->raiseError(MDB2_ERROR_CONNECT_FAILED, null, null,
|
|
$err, __FUNCTION__);
|
|
} else {
|
|
return $this->raiseError(MDB2_ERROR_CONNECT_FAILED, null, null,
|
|
'unable to establish a connection', __FUNCTION__);
|
|
}
|
|
}
|
|
|
|
if (!empty($this->dsn['charset'])) {
|
|
$result = $this->setCharset($this->dsn['charset'], $connection);
|
|
if (PEAR::isError($result)) {
|
|
$this->disconnect(false);
|
|
return $result;
|
|
}
|
|
}
|
|
|
|
return $connection;
|
|
}
|
|
|
|
// }}}
|
|
// {{{ connect()
|
|
|
|
/**
|
|
* Connect to the database
|
|
*
|
|
* @return MDB2_OK on success, MDB2 Error Object on failure
|
|
* @access public
|
|
*/
|
|
function connect()
|
|
{
|
|
if (is_resource($this->connection)) {
|
|
//if (count(array_diff($this->connected_dsn, $this->dsn)) == 0
|
|
if (MDB2::areEquals($this->connected_dsn, $this->dsn)
|
|
&& $this->opened_persistent == $this->options['persistent']
|
|
) {
|
|
return MDB2_OK;
|
|
}
|
|
$this->disconnect(false);
|
|
}
|
|
|
|
$connection = $this->_doConnect(
|
|
$this->dsn['username'],
|
|
$this->dsn['password'],
|
|
$this->options['persistent']
|
|
);
|
|
if (PEAR::isError($connection)) {
|
|
return $connection;
|
|
}
|
|
|
|
$this->connection = $connection;
|
|
$this->connected_dsn = $this->dsn;
|
|
$this->connected_database_name = '';
|
|
$this->opened_persistent = $this->options['persistent'];
|
|
$this->dbsyntax = $this->dsn['dbsyntax'] ? $this->dsn['dbsyntax'] : $this->phptype;
|
|
|
|
if ($this->database_name) {
|
|
if ($this->database_name != $this->connected_database_name) {
|
|
if (!@mysql_select_db($this->database_name, $connection)) {
|
|
$err = $this->raiseError(null, null, null,
|
|
'Could not select the database: '.$this->database_name, __FUNCTION__);
|
|
return $err;
|
|
}
|
|
$this->connected_database_name = $this->database_name;
|
|
}
|
|
}
|
|
|
|
$this->_getServerCapabilities();
|
|
|
|
return MDB2_OK;
|
|
}
|
|
|
|
// }}}
|
|
// {{{ setCharset()
|
|
|
|
/**
|
|
* Set the charset on the current connection
|
|
*
|
|
* @param string charset (or array(charset, collation))
|
|
* @param resource connection handle
|
|
*
|
|
* @return true on success, MDB2 Error Object on failure
|
|
*/
|
|
function setCharset($charset, $connection = null)
|
|
{
|
|
if (is_null($connection)) {
|
|
$connection = $this->getConnection();
|
|
if (PEAR::isError($connection)) {
|
|
return $connection;
|
|
}
|
|
}
|
|
$collation = null;
|
|
if (is_array($charset) && 2 == count($charset)) {
|
|
$collation = array_pop($charset);
|
|
$charset = array_pop($charset);
|
|
}
|
|
$client_info = mysql_get_client_info();
|
|
if (function_exists('mysql_set_charset') && version_compare($client_info, '5.0.6')) {
|
|
if (!$result = mysql_set_charset($charset, $connection)) {
|
|
$err =& $this->raiseError(null, null, null,
|
|
'Could not set client character set', __FUNCTION__);
|
|
return $err;
|
|
}
|
|
return $result;
|
|
}
|
|
$query = "SET NAMES '".mysql_real_escape_string($charset, $connection)."'";
|
|
if (!is_null($collation)) {
|
|
$query .= " COLLATE '".mysqli_real_escape_string($connection, $collation)."'";
|
|
}
|
|
return $this->_doQuery($query, true, $connection);
|
|
}
|
|
|
|
// }}}
|
|
// {{{ databaseExists()
|
|
|
|
/**
|
|
* check if given database name is exists?
|
|
*
|
|
* @param string $name name of the database that should be checked
|
|
*
|
|
* @return mixed true/false on success, a MDB2 error on failure
|
|
* @access public
|
|
*/
|
|
function databaseExists($name)
|
|
{
|
|
$connection = $this->_doConnect($this->dsn['username'],
|
|
$this->dsn['password'],
|
|
$this->options['persistent']);
|
|
if (PEAR::isError($connection)) {
|
|
return $connection;
|
|
}
|
|
|
|
$result = @mysql_select_db($name, $connection);
|
|
@mysql_close($connection);
|
|
|
|
return $result;
|
|
}
|
|
|
|
// }}}
|
|
// {{{ disconnect()
|
|
|
|
/**
|
|
* Log out and disconnect from the database.
|
|
*
|
|
* @param boolean $force if the disconnect should be forced even if the
|
|
* connection is opened persistently
|
|
* @return mixed true on success, false if not connected and error
|
|
* object on error
|
|
* @access public
|
|
*/
|
|
function disconnect($force = true)
|
|
{
|
|
if (is_resource($this->connection)) {
|
|
if ($this->in_transaction) {
|
|
$dsn = $this->dsn;
|
|
$database_name = $this->database_name;
|
|
$persistent = $this->options['persistent'];
|
|
$this->dsn = $this->connected_dsn;
|
|
$this->database_name = $this->connected_database_name;
|
|
$this->options['persistent'] = $this->opened_persistent;
|
|
$this->rollback();
|
|
$this->dsn = $dsn;
|
|
$this->database_name = $database_name;
|
|
$this->options['persistent'] = $persistent;
|
|
}
|
|
|
|
if (!$this->opened_persistent || $force) {
|
|
$ok = @mysql_close($this->connection);
|
|
if (!$ok) {
|
|
return $this->raiseError(MDB2_ERROR_DISCONNECT_FAILED,
|
|
null, null, null, __FUNCTION__);
|
|
}
|
|
}
|
|
} else {
|
|
return false;
|
|
}
|
|
return parent::disconnect($force);
|
|
}
|
|
|
|
// }}}
|
|
// {{{ standaloneQuery()
|
|
|
|
/**
|
|
* execute a query as DBA
|
|
*
|
|
* @param string $query the SQL query
|
|
* @param mixed $types array that contains the types of the columns in
|
|
* the result set
|
|
* @param boolean $is_manip if the query is a manipulation query
|
|
* @return mixed MDB2_OK on success, a MDB2 error on failure
|
|
* @access public
|
|
*/
|
|
function &standaloneQuery($query, $types = null, $is_manip = false)
|
|
{
|
|
$user = $this->options['DBA_username']? $this->options['DBA_username'] : $this->dsn['username'];
|
|
$pass = $this->options['DBA_password']? $this->options['DBA_password'] : $this->dsn['password'];
|
|
$connection = $this->_doConnect($user, $pass, $this->options['persistent']);
|
|
if (PEAR::isError($connection)) {
|
|
return $connection;
|
|
}
|
|
|
|
$offset = $this->offset;
|
|
$limit = $this->limit;
|
|
$this->offset = $this->limit = 0;
|
|
$query = $this->_modifyQuery($query, $is_manip, $limit, $offset);
|
|
|
|
$result =& $this->_doQuery($query, $is_manip, $connection, $this->database_name);
|
|
if (!PEAR::isError($result)) {
|
|
$result = $this->_affectedRows($connection, $result);
|
|
}
|
|
|
|
@mysql_close($connection);
|
|
return $result;
|
|
}
|
|
|
|
// }}}
|
|
// {{{ _doQuery()
|
|
|
|
/**
|
|
* Execute a query
|
|
* @param string $query query
|
|
* @param boolean $is_manip if the query is a manipulation query
|
|
* @param resource $connection
|
|
* @param string $database_name
|
|
* @return result or error object
|
|
* @access protected
|
|
*/
|
|
function &_doQuery($query, $is_manip = false, $connection = null, $database_name = null)
|
|
{
|
|
$this->last_query = $query;
|
|
$result = $this->debug($query, 'query', array('is_manip' => $is_manip, 'when' => 'pre'));
|
|
if ($result) {
|
|
if (PEAR::isError($result)) {
|
|
return $result;
|
|
}
|
|
$query = $result;
|
|
}
|
|
if ($this->options['disable_query']) {
|
|
$result = $is_manip ? 0 : null;
|
|
return $result;
|
|
}
|
|
|
|
if (is_null($connection)) {
|
|
$connection = $this->getConnection();
|
|
if (PEAR::isError($connection)) {
|
|
return $connection;
|
|
}
|
|
}
|
|
if (is_null($database_name)) {
|
|
$database_name = $this->database_name;
|
|
}
|
|
|
|
if ($database_name) {
|
|
if ($database_name != $this->connected_database_name) {
|
|
if (!@mysql_select_db($database_name, $connection)) {
|
|
$err = $this->raiseError(null, null, null,
|
|
'Could not select the database: '.$database_name, __FUNCTION__);
|
|
return $err;
|
|
}
|
|
$this->connected_database_name = $database_name;
|
|
}
|
|
}
|
|
|
|
$function = $this->options['result_buffering']
|
|
? 'mysql_query' : 'mysql_unbuffered_query';
|
|
$result = @$function($query, $connection);
|
|
if (!$result) {
|
|
$err =& $this->raiseError(null, null, null,
|
|
'Could not execute statement', __FUNCTION__);
|
|
return $err;
|
|
}
|
|
|
|
$this->debug($query, 'query', array('is_manip' => $is_manip, 'when' => 'post', 'result' => $result));
|
|
return $result;
|
|
}
|
|
|
|
// }}}
|
|
// {{{ _affectedRows()
|
|
|
|
/**
|
|
* Returns the number of rows affected
|
|
*
|
|
* @param resource $result
|
|
* @param resource $connection
|
|
* @return mixed MDB2 Error Object or the number of rows affected
|
|
* @access private
|
|
*/
|
|
function _affectedRows($connection, $result = null)
|
|
{
|
|
if (is_null($connection)) {
|
|
$connection = $this->getConnection();
|
|
if (PEAR::isError($connection)) {
|
|
return $connection;
|
|
}
|
|
}
|
|
return @mysql_affected_rows($connection);
|
|
}
|
|
|
|
// }}}
|
|
// {{{ _modifyQuery()
|
|
|
|
/**
|
|
* Changes a query string for various DBMS specific reasons
|
|
*
|
|
* @param string $query query to modify
|
|
* @param boolean $is_manip if it is a DML query
|
|
* @param integer $limit limit the number of rows
|
|
* @param integer $offset start reading from given offset
|
|
* @return string modified query
|
|
* @access protected
|
|
*/
|
|
function _modifyQuery($query, $is_manip, $limit, $offset)
|
|
{
|
|
if ($this->options['portability'] & MDB2_PORTABILITY_DELETE_COUNT) {
|
|
// "DELETE FROM table" gives 0 affected rows in MySQL.
|
|
// This little hack lets you know how many rows were deleted.
|
|
if (preg_match('/^\s*DELETE\s+FROM\s+(\S+)\s*$/i', $query)) {
|
|
$query = preg_replace('/^\s*DELETE\s+FROM\s+(\S+)\s*$/',
|
|
'DELETE FROM \1 WHERE 1=1', $query);
|
|
}
|
|
}
|
|
if ($limit > 0
|
|
&& !preg_match('/LIMIT\s*\d(?:\s*(?:,|OFFSET)\s*\d+)?(?:[^\)]*)?$/i', $query)
|
|
) {
|
|
$query = rtrim($query);
|
|
if (substr($query, -1) == ';') {
|
|
$query = substr($query, 0, -1);
|
|
}
|
|
|
|
// LIMIT doesn't always come last in the query
|
|
// @see http://dev.mysql.com/doc/refman/5.0/en/select.html
|
|
$after = '';
|
|
if (preg_match('/(\s+INTO\s+(?:OUT|DUMP)FILE\s.*)$/ims', $query, $matches)) {
|
|
$after = $matches[0];
|
|
$query = preg_replace('/(\s+INTO\s+(?:OUT|DUMP)FILE\s.*)$/ims', '', $query);
|
|
} elseif (preg_match('/(\s+FOR\s+UPDATE\s*)$/i', $query, $matches)) {
|
|
$after = $matches[0];
|
|
$query = preg_replace('/(\s+FOR\s+UPDATE\s*)$/im', '', $query);
|
|
} elseif (preg_match('/(\s+LOCK\s+IN\s+SHARE\s+MODE\s*)$/im', $query, $matches)) {
|
|
$after = $matches[0];
|
|
$query = preg_replace('/(\s+LOCK\s+IN\s+SHARE\s+MODE\s*)$/im', '', $query);
|
|
}
|
|
|
|
if ($is_manip) {
|
|
return $query . " LIMIT $limit" . $after;
|
|
} else {
|
|
return $query . " LIMIT $offset, $limit" . $after;
|
|
}
|
|
}
|
|
return $query;
|
|
}
|
|
|
|
// }}}
|
|
// {{{ getServerVersion()
|
|
|
|
/**
|
|
* return version information about the server
|
|
*
|
|
* @param bool $native determines if the raw version string should be returned
|
|
* @return mixed array/string with version information or MDB2 error object
|
|
* @access public
|
|
*/
|
|
function getServerVersion($native = false)
|
|
{
|
|
$connection = $this->getConnection();
|
|
if (PEAR::isError($connection)) {
|
|
return $connection;
|
|
}
|
|
if ($this->connected_server_info) {
|
|
$server_info = $this->connected_server_info;
|
|
} else {
|
|
$server_info = @mysql_get_server_info($connection);
|
|
}
|
|
if (!$server_info) {
|
|
return $this->raiseError(null, null, null,
|
|
'Could not get server information', __FUNCTION__);
|
|
}
|
|
// cache server_info
|
|
$this->connected_server_info = $server_info;
|
|
if (!$native) {
|
|
$tmp = explode('.', $server_info, 3);
|
|
if (isset($tmp[2]) && strpos($tmp[2], '-')) {
|
|
$tmp2 = explode('-', @$tmp[2], 2);
|
|
} else {
|
|
$tmp2[0] = isset($tmp[2]) ? $tmp[2] : null;
|
|
$tmp2[1] = null;
|
|
}
|
|
$server_info = array(
|
|
'major' => isset($tmp[0]) ? $tmp[0] : null,
|
|
'minor' => isset($tmp[1]) ? $tmp[1] : null,
|
|
'patch' => $tmp2[0],
|
|
'extra' => $tmp2[1],
|
|
'native' => $server_info,
|
|
);
|
|
}
|
|
return $server_info;
|
|
}
|
|
|
|
// }}}
|
|
// {{{ _getServerCapabilities()
|
|
|
|
/**
|
|
* Fetch some information about the server capabilities
|
|
* (transactions, subselects, prepared statements, etc).
|
|
*
|
|
* @access private
|
|
*/
|
|
function _getServerCapabilities()
|
|
{
|
|
if (!$this->server_capabilities_checked) {
|
|
$this->server_capabilities_checked = true;
|
|
|
|
//set defaults
|
|
$this->supported['sub_selects'] = 'emulated';
|
|
$this->supported['prepared_statements'] = 'emulated';
|
|
$this->supported['triggers'] = false;
|
|
$this->start_transaction = false;
|
|
$this->varchar_max_length = 255;
|
|
|
|
$server_info = $this->getServerVersion();
|
|
if (is_array($server_info)) {
|
|
$server_version = $server_info['major'].'.'.$server_info['minor'].'.'.$server_info['patch'];
|
|
|
|
if (!version_compare($server_version, '4.1.0', '<')) {
|
|
$this->supported['sub_selects'] = true;
|
|
$this->supported['prepared_statements'] = true;
|
|
}
|
|
|
|
// SAVEPOINTs were introduced in MySQL 4.0.14 and 4.1.1 (InnoDB)
|
|
if (version_compare($server_version, '4.1.0', '>=')) {
|
|
if (version_compare($server_version, '4.1.1', '<')) {
|
|
$this->supported['savepoints'] = false;
|
|
}
|
|
} elseif (version_compare($server_version, '4.0.14', '<')) {
|
|
$this->supported['savepoints'] = false;
|
|
}
|
|
|
|
if (!version_compare($server_version, '4.0.11', '<')) {
|
|
$this->start_transaction = true;
|
|
}
|
|
|
|
if (!version_compare($server_version, '5.0.3', '<')) {
|
|
$this->varchar_max_length = 65532;
|
|
}
|
|
|
|
if (!version_compare($server_version, '5.0.2', '<')) {
|
|
$this->supported['triggers'] = true;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// }}}
|
|
// {{{ function _skipUserDefinedVariable($query, $position)
|
|
|
|
/**
|
|
* Utility method, used by prepare() to avoid misinterpreting MySQL user
|
|
* defined variables (SELECT @x:=5) for placeholders.
|
|
* Check if the placeholder is a false positive, i.e. if it is an user defined
|
|
* variable instead. If so, skip it and advance the position, otherwise
|
|
* return the current position, which is valid
|
|
*
|
|
* @param string $query
|
|
* @param integer $position current string cursor position
|
|
* @return integer $new_position
|
|
* @access protected
|
|
*/
|
|
function _skipUserDefinedVariable($query, $position)
|
|
{
|
|
$found = strpos(strrev(substr($query, 0, $position)), '@');
|
|
if ($found === false) {
|
|
return $position;
|
|
}
|
|
$pos = strlen($query) - strlen(substr($query, $position)) - $found - 1;
|
|
$substring = substr($query, $pos, $position - $pos + 2);
|
|
if (preg_match('/^@\w+\s*:=$/', $substring)) {
|
|
return $position + 1; //found an user defined variable: skip it
|
|
}
|
|
return $position;
|
|
}
|
|
|
|
// }}}
|
|
// {{{ 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 :name and are placeholders which can be set using
|
|
* bindParam() and the query can be sent off using the execute() method.
|
|
* The allowed format for :name can be set with the 'bindname_format' option.
|
|
*
|
|
* @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 or MDB2_PREPARE_RESULT, if set to
|
|
* MDB2_PREPARE_MANIP the query is handled as a manipulation query
|
|
* @param mixed $lobs key (field) value (parameter) pair for all lob placeholders
|
|
* @return mixed resource handle for the prepared query on success, a MDB2
|
|
* error on failure
|
|
* @access public
|
|
* @see bindParam, execute
|
|
*/
|
|
function &prepare($query, $types = null, $result_types = null, $lobs = array())
|
|
{
|
|
if ($this->options['emulate_prepared']
|
|
|| $this->supported['prepared_statements'] !== true
|
|
) {
|
|
$obj =& parent::prepare($query, $types, $result_types, $lobs);
|
|
return $obj;
|
|
}
|
|
$is_manip = ($result_types === MDB2_PREPARE_MANIP);
|
|
$offset = $this->offset;
|
|
$limit = $this->limit;
|
|
$this->offset = $this->limit = 0;
|
|
$query = $this->_modifyQuery($query, $is_manip, $limit, $offset);
|
|
$result = $this->debug($query, __FUNCTION__, array('is_manip' => $is_manip, 'when' => 'pre'));
|
|
if ($result) {
|
|
if (PEAR::isError($result)) {
|
|
return $result;
|
|
}
|
|
$query = $result;
|
|
}
|
|
$placeholder_type_guess = $placeholder_type = null;
|
|
$question = '?';
|
|
$colon = ':';
|
|
$positions = array();
|
|
$position = 0;
|
|
while ($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];
|
|
}
|
|
|
|
$new_pos = $this->_skipDelimitedStrings($query, $position, $p_position);
|
|
if (PEAR::isError($new_pos)) {
|
|
return $new_pos;
|
|
}
|
|
if ($new_pos != $position) {
|
|
$position = $new_pos;
|
|
continue; //evaluate again starting from the new position
|
|
}
|
|
|
|
//make sure this is not part of an user defined variable
|
|
$new_pos = $this->_skipUserDefinedVariable($query, $position);
|
|
if ($new_pos != $position) {
|
|
$position = $new_pos;
|
|
continue; //evaluate again starting from the new position
|
|
}
|
|
|
|
if ($query[$position] == $placeholder_type_guess) {
|
|
if (is_null($placeholder_type)) {
|
|
$placeholder_type = $query[$p_position];
|
|
$question = $colon = $placeholder_type;
|
|
}
|
|
if ($placeholder_type == ':') {
|
|
$regexp = '/^.{'.($position+1).'}('.$this->options['bindname_format'].').*$/s';
|
|
$parameter = preg_replace($regexp, '\\1', $query);
|
|
if ($parameter === '') {
|
|
$err =& $this->raiseError(MDB2_ERROR_SYNTAX, null, null,
|
|
'named parameter name must match "bindname_format" option', __FUNCTION__);
|
|
return $err;
|
|
}
|
|
$positions[$p_position] = $parameter;
|
|
$query = substr_replace($query, '?', $position, strlen($parameter)+1);
|
|
} else {
|
|
$positions[$p_position] = count($positions);
|
|
}
|
|
$position = $p_position + 1;
|
|
} else {
|
|
$position = $p_position;
|
|
}
|
|
}
|
|
$connection = $this->getConnection();
|
|
if (PEAR::isError($connection)) {
|
|
return $connection;
|
|
}
|
|
static $prep_statement_counter = 1;
|
|
$statement_name = sprintf($this->options['statement_format'], $this->phptype, $prep_statement_counter++ . sha1(microtime() + mt_rand()));
|
|
$statement_name = substr(strtolower($statement_name), 0, $this->options['max_identifiers_length']);
|
|
$query = "PREPARE $statement_name FROM ".$this->quote($query, 'text');
|
|
$statement =& $this->_doQuery($query, true, $connection);
|
|
if (PEAR::isError($statement)) {
|
|
return $statement;
|
|
}
|
|
|
|
$class_name = 'MDB2_Statement_'.$this->phptype;
|
|
$obj = new $class_name($this, $statement_name, $positions, $query, $types, $result_types, $is_manip, $limit, $offset);
|
|
$this->debug($query, __FUNCTION__, array('is_manip' => $is_manip, 'when' => 'post', 'result' => $obj));
|
|
return $obj;
|
|
}
|
|
|
|
// }}}
|
|
// {{{ 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 old row is deleted before the new row is inserted.
|
|
*
|
|
* The REPLACE type of query does not make part of the SQL standards. Since
|
|
* practically 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.
|
|
*
|
|
* @access public
|
|
*
|
|
* @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
|
|
*
|
|
* @see http://dev.mysql.com/doc/refman/5.0/en/replace.html
|
|
* @return mixed MDB2_OK on success, a MDB2 error on failure
|
|
*/
|
|
function replace($table, $fields)
|
|
{
|
|
$count = count($fields);
|
|
$query = $values = '';
|
|
$keys = $colnum = 0;
|
|
for (reset($fields); $colnum < $count; next($fields), $colnum++) {
|
|
$name = key($fields);
|
|
if ($colnum > 0) {
|
|
$query .= ',';
|
|
$values.= ',';
|
|
}
|
|
$query.= $this->quoteIdentifier($name, true);
|
|
if (isset($fields[$name]['null']) && $fields[$name]['null']) {
|
|
$value = 'NULL';
|
|
} else {
|
|
$type = isset($fields[$name]['type']) ? $fields[$name]['type'] : null;
|
|
$value = $this->quote($fields[$name]['value'], $type);
|
|
if (PEAR::isError($value)) {
|
|
return $value;
|
|
}
|
|
}
|
|
$values.= $value;
|
|
if (isset($fields[$name]['key']) && $fields[$name]['key']) {
|
|
if ($value === 'NULL') {
|
|
return $this->raiseError(MDB2_ERROR_CANNOT_REPLACE, null, null,
|
|
'key value '.$name.' may not be NULL', __FUNCTION__);
|
|
}
|
|
$keys++;
|
|
}
|
|
}
|
|
if ($keys == 0) {
|
|
return $this->raiseError(MDB2_ERROR_CANNOT_REPLACE, null, null,
|
|
'not specified which fields are keys', __FUNCTION__);
|
|
}
|
|
|
|
$connection = $this->getConnection();
|
|
if (PEAR::isError($connection)) {
|
|
return $connection;
|
|
}
|
|
|
|
$table = $this->quoteIdentifier($table, true);
|
|
$query = "REPLACE INTO $table ($query) VALUES ($values)";
|
|
$result =& $this->_doQuery($query, true, $connection);
|
|
if (PEAR::isError($result)) {
|
|
return $result;
|
|
}
|
|
return $this->_affectedRows($connection, $result);
|
|
}
|
|
|
|
// }}}
|
|
// {{{ nextID()
|
|
|
|
/**
|
|
* Returns the next free id of a sequence
|
|
*
|
|
* @param string $seq_name name of the sequence
|
|
* @param boolean $ondemand when true the sequence is
|
|
* automatic created, if it
|
|
* not exists
|
|
*
|
|
* @return mixed MDB2 Error Object or id
|
|
* @access public
|
|
*/
|
|
function nextID($seq_name, $ondemand = true)
|
|
{
|
|
$sequence_name = $this->quoteIdentifier($this->getSequenceName($seq_name), true);
|
|
$seqcol_name = $this->quoteIdentifier($this->options['seqcol_name'], true);
|
|
$query = "INSERT INTO $sequence_name ($seqcol_name) VALUES (NULL)";
|
|
$this->pushErrorHandling(PEAR_ERROR_RETURN);
|
|
$this->expectError(MDB2_ERROR_NOSUCHTABLE);
|
|
$result =& $this->_doQuery($query, true);
|
|
$this->popExpect();
|
|
$this->popErrorHandling();
|
|
if (PEAR::isError($result)) {
|
|
if ($ondemand && $result->getCode() == MDB2_ERROR_NOSUCHTABLE) {
|
|
$this->loadModule('Manager', null, true);
|
|
$result = $this->manager->createSequence($seq_name);
|
|
if (PEAR::isError($result)) {
|
|
return $this->raiseError($result, null, null,
|
|
'on demand sequence '.$seq_name.' could not be created', __FUNCTION__);
|
|
} else {
|
|
return $this->nextID($seq_name, false);
|
|
}
|
|
}
|
|
return $result;
|
|
}
|
|
$value = $this->lastInsertID();
|
|
if (is_numeric($value)) {
|
|
$query = "DELETE FROM $sequence_name WHERE $seqcol_name < $value";
|
|
$result =& $this->_doQuery($query, true);
|
|
if (PEAR::isError($result)) {
|
|
$this->warnings[] = 'nextID: could not delete previous sequence table values from '.$seq_name;
|
|
}
|
|
}
|
|
return $value;
|
|
}
|
|
|
|
// }}}
|
|
// {{{ lastInsertID()
|
|
|
|
/**
|
|
* Returns the autoincrement ID if supported or $id or fetches the current
|
|
* ID in a sequence called: $table.(empty($field) ? '' : '_'.$field)
|
|
*
|
|
* @param string $table name of the table into which a new row was inserted
|
|
* @param string $field name of the field into which a new row was inserted
|
|
* @return mixed MDB2 Error Object or id
|
|
* @access public
|
|
*/
|
|
function lastInsertID($table = null, $field = null)
|
|
{
|
|
// not using mysql_insert_id() due to http://pear.php.net/bugs/bug.php?id=8051
|
|
return $this->queryOne('SELECT LAST_INSERT_ID()', 'integer');
|
|
}
|
|
|
|
// }}}
|
|
// {{{ 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)
|
|
{
|
|
$sequence_name = $this->quoteIdentifier($this->getSequenceName($seq_name), true);
|
|
$seqcol_name = $this->quoteIdentifier($this->options['seqcol_name'], true);
|
|
$query = "SELECT MAX($seqcol_name) FROM $sequence_name";
|
|
return $this->queryOne($query, 'integer');
|
|
}
|
|
}
|
|
|
|
/**
|
|
* MDB2 MySQL result driver
|
|
*
|
|
* @package MDB2
|
|
* @category Database
|
|
* @author Lukas Smith <smith@pooteeweet.org>
|
|
*/
|
|
class MDB2_Result_mysql extends MDB2_Result_Common
|
|
{
|
|
// }}}
|
|
// {{{ fetchRow()
|
|
|
|
/**
|
|
* Fetch a row and insert the data into an existing array.
|
|
*
|
|
* @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, $rownum = null)
|
|
{
|
|
if (!is_null($rownum)) {
|
|
$seek = $this->seek($rownum);
|
|
if (PEAR::isError($seek)) {
|
|
return $seek;
|
|
}
|
|
}
|
|
if ($fetchmode == MDB2_FETCHMODE_DEFAULT) {
|
|
$fetchmode = $this->db->fetchmode;
|
|
}
|
|
if ($fetchmode & MDB2_FETCHMODE_ASSOC) {
|
|
$row = @mysql_fetch_assoc($this->result);
|
|
if (is_array($row)
|
|
&& $this->db->options['portability'] & MDB2_PORTABILITY_FIX_CASE
|
|
) {
|
|
$row = array_change_key_case($row, $this->db->options['field_case']);
|
|
}
|
|
} else {
|
|
$row = @mysql_fetch_row($this->result);
|
|
}
|
|
|
|
if (!$row) {
|
|
if ($this->result === false) {
|
|
$err =& $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
|
|
'resultset has already been freed', __FUNCTION__);
|
|
return $err;
|
|
}
|
|
$null = null;
|
|
return $null;
|
|
}
|
|
$mode = $this->db->options['portability'] & MDB2_PORTABILITY_EMPTY_TO_NULL;
|
|
$rtrim = false;
|
|
if ($this->db->options['portability'] & MDB2_PORTABILITY_RTRIM) {
|
|
if (empty($this->types)) {
|
|
$mode += MDB2_PORTABILITY_RTRIM;
|
|
} else {
|
|
$rtrim = true;
|
|
}
|
|
}
|
|
if ($mode) {
|
|
$this->db->_fixResultArrayValues($row, $mode);
|
|
}
|
|
if (!empty($this->types)) {
|
|
$row = $this->db->datatype->convertResultRow($this->types, $row, $rtrim);
|
|
}
|
|
if (!empty($this->values)) {
|
|
$this->_assignBindColumns($row);
|
|
}
|
|
if ($fetchmode === MDB2_FETCHMODE_OBJECT) {
|
|
$object_class = $this->db->options['fetch_class'];
|
|
if ($object_class == 'stdClass') {
|
|
$row = (object) $row;
|
|
} else {
|
|
$row = new $object_class($row);
|
|
}
|
|
}
|
|
++$this->rownum;
|
|
return $row;
|
|
}
|
|
|
|
// }}}
|
|
// {{{ _getColumnNames()
|
|
|
|
/**
|
|
* Retrieve the names of columns returned by the DBMS in a query result.
|
|
*
|
|
* @return mixed Array variable that holds the names of columns as keys
|
|
* or an MDB2 error on failure.
|
|
* Some DBMS may not return any columns when the result set
|
|
* does not contain any rows.
|
|
* @access private
|
|
*/
|
|
function _getColumnNames()
|
|
{
|
|
$columns = array();
|
|
$numcols = $this->numCols();
|
|
if (PEAR::isError($numcols)) {
|
|
return $numcols;
|
|
}
|
|
for ($column = 0; $column < $numcols; $column++) {
|
|
$column_name = @mysql_field_name($this->result, $column);
|
|
$columns[$column_name] = $column;
|
|
}
|
|
if ($this->db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
|
|
$columns = array_change_key_case($columns, $this->db->options['field_case']);
|
|
}
|
|
return $columns;
|
|
}
|
|
|
|
// }}}
|
|
// {{{ 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()
|
|
{
|
|
$cols = @mysql_num_fields($this->result);
|
|
if (is_null($cols)) {
|
|
if ($this->result === false) {
|
|
return $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
|
|
'resultset has already been freed', __FUNCTION__);
|
|
} elseif (is_null($this->result)) {
|
|
return count($this->types);
|
|
}
|
|
return $this->db->raiseError(null, null, null,
|
|
'Could not get column count', __FUNCTION__);
|
|
}
|
|
return $cols;
|
|
}
|
|
|
|
// }}}
|
|
// {{{ free()
|
|
|
|
/**
|
|
* Free the internal resources associated with result.
|
|
*
|
|
* @return boolean true on success, false if result is invalid
|
|
* @access public
|
|
*/
|
|
function free()
|
|
{
|
|
if (is_resource($this->result) && $this->db->connection) {
|
|
$free = @mysql_free_result($this->result);
|
|
if ($free === false) {
|
|
return $this->db->raiseError(null, null, null,
|
|
'Could not free result', __FUNCTION__);
|
|
}
|
|
}
|
|
$this->result = false;
|
|
return MDB2_OK;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* MDB2 MySQL buffered result driver
|
|
*
|
|
* @package MDB2
|
|
* @category Database
|
|
* @author Lukas Smith <smith@pooteeweet.org>
|
|
*/
|
|
class MDB2_BufferedResult_mysql extends MDB2_Result_mysql
|
|
{
|
|
// }}}
|
|
// {{{ 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)
|
|
{
|
|
if ($this->rownum != ($rownum - 1) && !@mysql_data_seek($this->result, $rownum)) {
|
|
if ($this->result === false) {
|
|
return $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
|
|
'resultset has already been freed', __FUNCTION__);
|
|
} elseif (is_null($this->result)) {
|
|
return MDB2_OK;
|
|
}
|
|
return $this->db->raiseError(MDB2_ERROR_INVALID, null, null,
|
|
'tried to seek to an invalid row number ('.$rownum.')', __FUNCTION__);
|
|
}
|
|
$this->rownum = $rownum - 1;
|
|
return MDB2_OK;
|
|
}
|
|
|
|
// }}}
|
|
// {{{ valid()
|
|
|
|
/**
|
|
* Check if the end of the result set has been reached
|
|
*
|
|
* @return mixed true or false on sucess, a MDB2 error on failure
|
|
* @access public
|
|
*/
|
|
function valid()
|
|
{
|
|
$numrows = $this->numRows();
|
|
if (PEAR::isError($numrows)) {
|
|
return $numrows;
|
|
}
|
|
return $this->rownum < ($numrows - 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()
|
|
{
|
|
$rows = @mysql_num_rows($this->result);
|
|
if (false === $rows) {
|
|
if (false === $this->result) {
|
|
return $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
|
|
'resultset has already been freed', __FUNCTION__);
|
|
} elseif (is_null($this->result)) {
|
|
return 0;
|
|
}
|
|
return $this->db->raiseError(null, null, null,
|
|
'Could not get row count', __FUNCTION__);
|
|
}
|
|
return $rows;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* MDB2 MySQL statement driver
|
|
*
|
|
* @package MDB2
|
|
* @category Database
|
|
* @author Lukas Smith <smith@pooteeweet.org>
|
|
*/
|
|
class MDB2_Statement_mysql extends MDB2_Statement_Common
|
|
{
|
|
// {{{ _execute()
|
|
|
|
/**
|
|
* Execute a prepared query statement helper method.
|
|
*
|
|
* @param mixed $result_class string which specifies which result class to use
|
|
* @param mixed $result_wrap_class string which specifies which class to wrap results in
|
|
*
|
|
* @return mixed MDB2_Result or integer (affected rows) on success,
|
|
* a MDB2 error on failure
|
|
* @access private
|
|
*/
|
|
function &_execute($result_class = true, $result_wrap_class = false)
|
|
{
|
|
if (is_null($this->statement)) {
|
|
$result =& parent::_execute($result_class, $result_wrap_class);
|
|
return $result;
|
|
}
|
|
$this->db->last_query = $this->query;
|
|
$this->db->debug($this->query, 'execute', array('is_manip' => $this->is_manip, 'when' => 'pre', 'parameters' => $this->values));
|
|
if ($this->db->getOption('disable_query')) {
|
|
$result = $this->is_manip ? 0 : null;
|
|
return $result;
|
|
}
|
|
|
|
$connection = $this->db->getConnection();
|
|
if (PEAR::isError($connection)) {
|
|
return $connection;
|
|
}
|
|
|
|
$query = 'EXECUTE '.$this->statement;
|
|
if (!empty($this->positions)) {
|
|
$parameters = array();
|
|
foreach ($this->positions as $parameter) {
|
|
if (!array_key_exists($parameter, $this->values)) {
|
|
return $this->db->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
|
|
'Unable to bind to missing placeholder: '.$parameter, __FUNCTION__);
|
|
}
|
|
$value = $this->values[$parameter];
|
|
$type = array_key_exists($parameter, $this->types) ? $this->types[$parameter] : null;
|
|
if (is_resource($value) || $type == 'clob' || $type == 'blob' && $this->db->options['lob_allow_url_include']) {
|
|
if (!is_resource($value) && preg_match('/^(\w+:\/\/)(.*)$/', $value, $match)) {
|
|
if ($match[1] == 'file://') {
|
|
$value = $match[2];
|
|
}
|
|
$value = @fopen($value, 'r');
|
|
$close = true;
|
|
}
|
|
if (is_resource($value)) {
|
|
$data = '';
|
|
while (!@feof($value)) {
|
|
$data.= @fread($value, $this->db->options['lob_buffer_length']);
|
|
}
|
|
if ($close) {
|
|
@fclose($value);
|
|
}
|
|
$value = $data;
|
|
}
|
|
}
|
|
$quoted = $this->db->quote($value, $type);
|
|
if (PEAR::isError($quoted)) {
|
|
return $quoted;
|
|
}
|
|
$param_query = 'SET @'.$parameter.' = '.$quoted;
|
|
$result = $this->db->_doQuery($param_query, true, $connection);
|
|
if (PEAR::isError($result)) {
|
|
return $result;
|
|
}
|
|
}
|
|
$query.= ' USING @'.implode(', @', array_values($this->positions));
|
|
}
|
|
|
|
$result = $this->db->_doQuery($query, $this->is_manip, $connection);
|
|
if (PEAR::isError($result)) {
|
|
return $result;
|
|
}
|
|
|
|
if ($this->is_manip) {
|
|
$affected_rows = $this->db->_affectedRows($connection, $result);
|
|
return $affected_rows;
|
|
}
|
|
|
|
$result =& $this->db->_wrapResult($result, $this->result_types,
|
|
$result_class, $result_wrap_class, $this->limit, $this->offset);
|
|
$this->db->debug($this->query, 'execute', array('is_manip' => $this->is_manip, 'when' => 'post', 'result' => $result));
|
|
return $result;
|
|
}
|
|
|
|
// }}}
|
|
// {{{ free()
|
|
|
|
/**
|
|
* Release resources allocated for the specified prepared query.
|
|
*
|
|
* @return mixed MDB2_OK on success, a MDB2 error on failure
|
|
* @access public
|
|
*/
|
|
function free()
|
|
{
|
|
if (is_null($this->positions)) {
|
|
return $this->db->raiseError(MDB2_ERROR, null, null,
|
|
'Prepared statement has already been freed', __FUNCTION__);
|
|
}
|
|
$result = MDB2_OK;
|
|
|
|
if (!is_null($this->statement)) {
|
|
$connection = $this->db->getConnection();
|
|
if (PEAR::isError($connection)) {
|
|
return $connection;
|
|
}
|
|
$query = 'DEALLOCATE PREPARE '.$this->statement;
|
|
$result = $this->db->_doQuery($query, true, $connection);
|
|
}
|
|
|
|
parent::free();
|
|
return $result;
|
|
}
|
|
}
|
|
?>
|