diff options
| author | till <till@php.net> | 2008-02-03 12:58:34 +0000 |
|---|---|---|
| committer | till <till@php.net> | 2008-02-03 12:58:34 +0000 |
| commit | 95ebbc985a0e64a364e880de89dbc1ae7952d91e (patch) | |
| tree | 78474efc88790b6d88e4976b51c7bebb5d017a37 /program/lib/MDB2/Driver/mysql.php | |
| parent | 9f5bd376b47f41924ede3d8136302d0f7b81c89f (diff) | |
* putting latest MDB2 into SVN
* adding MDB2 drivers for mssql, mysql, mysqli, pgsql, sqlite
Diffstat (limited to 'program/lib/MDB2/Driver/mysql.php')
| -rw-r--r-- | program/lib/MDB2/Driver/mysql.php | 1535 |
1 files changed, 1535 insertions, 0 deletions
diff --git a/program/lib/MDB2/Driver/mysql.php b/program/lib/MDB2/Driver/mysql.php new file mode 100644 index 000000000..1e0453936 --- /dev/null +++ b/program/lib/MDB2/Driver/mysql.php @@ -0,0 +1,1535 @@ +<?php
+// vim: set et ts=4 sw=4 fdm=marker:
+// +----------------------------------------------------------------------+
+// | PHP versions 4 and 5 |
+// +----------------------------------------------------------------------+
+// | Copyright (c) 1998-2006 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: mysql.php,v 1.195 2007/11/10 13:27:03 quipo Exp $
+//
+
+/**
+ * MDB2 MySQL driver
+ *
+ * @package MDB2
+ * @category Database
+ * @author Lukas Smith <smith@pooteeweet.org>
+ */
+class MDB2_Driver_mysql extends MDB2_Driver_Common
+{
+ // {{{ properties
+
+ var $string_quoting = array('start' => "'", 'end' => "'", 'escape' => '\\', 'escape_pattern' => '\\');
+
+ var $identifier_quoting = array('start' => '`', 'end' => '`', 'escape' => '`');
+
+ var $sql_comments = array(
+ array('start' => '-- ', 'end' => "\n", 'escape' => false),
+ array('start' => '#', 'end' => "\n", 'escape' => false),
+ array('start' => '/*', 'end' => '*/', 'escape' => false),
+ );
+
+ var $server_capabilities_checked = false;
+
+ var $start_transaction = false;
+
+ var $varchar_max_length = 255;
+
+ // }}}
+ // {{{ constructor
+
+ /**
+ * Constructor
+ */
+ function __construct()
+ {
+ parent::__construct();
+
+ $this->phptype = 'mysql';
+ $this->dbsyntax = 'mysql';
+
+ $this->supported['sequences'] = 'emulated';
+ $this->supported['indexes'] = true;
+ $this->supported['affected_rows'] = true;
+ $this->supported['transactions'] = false;
+ $this->supported['savepoints'] = false;
+ $this->supported['summary_functions'] = true;
+ $this->supported['order_by_text'] = true;
+ $this->supported['current_id'] = 'emulated';
+ $this->supported['limit_queries'] = true;
+ $this->supported['LOBs'] = true;
+ $this->supported['replace'] = true;
+ $this->supported['sub_selects'] = 'emulated';
+ $this->supported['auto_increment'] = true;
+ $this->supported['primary_key'] = true;
+ $this->supported['result_introspection'] = true;
+ $this->supported['prepared_statements'] = 'emulated';
+ $this->supported['identifier_quoting'] = true;
+ $this->supported['pattern_escaping'] = true;
+ $this->supported['new_link'] = true;
+
+ $this->options['default_table_type'] = '';
+ }
+
+ // }}}
+ // {{{ errorInfo()
+
+ /**
+ * This method is used to collect information about an error
+ *
+ * @param integer $error
+ * @return array
+ * @access public
+ */
+ function errorInfo($error = null)
+ {
+ if ($this->connection) {
+ $native_code = @mysql_errno($this->connection);
+ $native_msg = @mysql_error($this->connection);
+ } else {
+ $native_code = @mysql_errno();
+ $native_msg = @mysql_error();
+ }
+ if (is_null($error)) {
+ static $ecode_map;
+ if (empty($ecode_map)) {
+ $ecode_map = array(
+ 1000 => MDB2_ERROR_INVALID, //hashchk
+ 1001 => MDB2_ERROR_INVALID, //isamchk
+ 1004 => MDB2_ERROR_CANNOT_CREATE,
+ 1005 => MDB2_ERROR_CANNOT_CREATE,
+ 1006 => MDB2_ERROR_CANNOT_CREATE,
+ 1007 => MDB2_ERROR_ALREADY_EXISTS,
+ 1008 => MDB2_ERROR_CANNOT_DROP,
+ 1009 => MDB2_ERROR_CANNOT_DROP,
+ 1010 => MDB2_ERROR_CANNOT_DROP,
+ 1011 => MDB2_ERROR_CANNOT_DELETE,
+ 1022 => MDB2_ERROR_ALREADY_EXISTS,
+ 1029 => MDB2_ERROR_NOT_FOUND,
+ 1032 => MDB2_ERROR_NOT_FOUND,
+ 1044 => MDB2_ERROR_ACCESS_VIOLATION,
+ 1045 => MDB2_ERROR_ACCESS_VIOLATION,
+ 1046 => MDB2_ERROR_NODBSELECTED,
+ 1048 => MDB2_ERROR_CONSTRAINT,
+ 1049 => MDB2_ERROR_NOSUCHDB,
+ 1050 => MDB2_ERROR_ALREADY_EXISTS,
+ 1051 => MDB2_ERROR_NOSUCHTABLE,
+ 1054 => MDB2_ERROR_NOSUCHFIELD,
+ 1060 => MDB2_ERROR_ALREADY_EXISTS,
+ 1061 => MDB2_ERROR_ALREADY_EXISTS,
+ 1062 => MDB2_ERROR_ALREADY_EXISTS,
+ 1064 => MDB2_ERROR_SYNTAX,
+ 1067 => MDB2_ERROR_INVALID,
+ 1072 => MDB2_ERROR_NOT_FOUND,
+ 1086 => MDB2_ERROR_ALREADY_EXISTS,
+ 1091 => MDB2_ERROR_NOT_FOUND,
+ 1100 => MDB2_ERROR_NOT_LOCKED,
+ 1109 => MDB2_ERROR_NOT_FOUND,
+ 1125 => MDB2_ERROR_ALREADY_EXISTS,
+ 1136 => MDB2_ERROR_VALUE_COUNT_ON_ROW,
+ 1138 => MDB2_ERROR_INVALID,
+ 1142 => MDB2_ERROR_ACCESS_VIOLATION,
+ 1143 => MDB2_ERROR_ACCESS_VIOLATION,
+ 1146 => MDB2_ERROR_NOSUCHTABLE,
+ 1149 => MDB2_ERROR_SYNTAX,
+ 1169 => MDB2_ERROR_CONSTRAINT,
+ 1176 => MDB2_ERROR_NOT_FOUND,
+ 1177 => MDB2_ERROR_NOSUCHTABLE,
+ 1213 => MDB2_ERROR_DEADLOCK,
+ 1216 => MDB2_ERROR_CONSTRAINT,
+ 1217 => MDB2_ERROR_CONSTRAINT,
+ 1227 => MDB2_ERROR_ACCESS_VIOLATION,
+ 1299 => MDB2_ERROR_INVALID_DATE,
+ 1300 => MDB2_ERROR_INVALID,
+ 1304 => MDB2_ERROR_ALREADY_EXISTS,
+ 1305 => MDB2_ERROR_NOT_FOUND,
+ 1306 => MDB2_ERROR_CANNOT_DROP,
+ 1307 => MDB2_ERROR_CANNOT_CREATE,
+ 1334 => MDB2_ERROR_CANNOT_ALTER,
+ 1339 => MDB2_ERROR_NOT_FOUND,
+ 1356 => MDB2_ERROR_INVALID,
+ 1359 => MDB2_ERROR_ALREADY_EXISTS,
+ 1360 => MDB2_ERROR_NOT_FOUND,
+ 1363 => MDB2_ERROR_NOT_FOUND,
+ 1365 => MDB2_ERROR_DIVZERO,
+ 1451 => MDB2_ERROR_CONSTRAINT,
+ 1452 => MDB2_ERROR_CONSTRAINT,
+ 1542 => MDB2_ERROR_CANNOT_DROP,
+ 1546 => MDB2_ERROR_CONSTRAINT,
+ 1582 => MDB2_ERROR_CONSTRAINT,
+ );
+ }
+ if ($this->options['portability'] & MDB2_PORTABILITY_ERRORS) {
+ $ecode_map[1022] = MDB2_ERROR_CONSTRAINT;
+ $ecode_map[1048] = MDB2_ERROR_CONSTRAINT_NOT_NULL;
+ $ecode_map[1062] = MDB2_ERROR_CONSTRAINT;
+ } else {
+ // Doing this in case mode changes during runtime.
+ $ecode_map[1022] = MDB2_ERROR_ALREADY_EXISTS;
+ $ecode_map[1048] = MDB2_ERROR_CONSTRAINT;
+ $ecode_map[1062] = MDB2_ERROR_ALREADY_EXISTS;
+ }
+ if (isset($ecode_map[$native_code])) {
+ $error = $ecode_map[$native_code];
+ }
+ }
+ return array($error, $native_code, $native_msg);
+ }
+
+ // }}}
+ // {{{ escape()
+
+ /**
+ * Quotes a string so it can be safely used in a query. It will quote
+ * the text so it can safely be used within a query.
+ *
+ * @param string the input string to quote
+ * @param bool escape wildcards
+ *
+ * @return string quoted string
+ *
+ * @access public
+ */
+ function escape($text, $escape_wildcards = false)
+ {
+ if ($escape_wildcards) {
+ $text = $this->escapePattern($text);
+ }
+ $connection = $this->getConnection();
+ if (PEAR::isError($connection)) {
+ return $connection;
+ }
+ $text = @mysql_real_escape_string($text, $connection);
+ return $text;
+ }
+
+ // }}}
+ // {{{ beginTransaction()
+
+ /**
+ * Start a transaction or set a savepoint.
+ *
+ * @param string name of a savepoint to set
+ * @return mixed MDB2_OK on success, a MDB2 error on failure
+ *
+ * @access public
+ */
+ function beginTransaction($savepoint = null)
+ {
+ $this->debug('Starting transaction/savepoint', __FUNCTION__, array('is_manip' => true, 'savepoint' => $savepoint));
+ $this->_getServerCapabilities();
+ if (!is_null($savepoint)) {
+ if (!$this->supports('savepoints')) {
+ return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+ 'savepoints are not supported', __FUNCTION__);
+ }
+ if (!$this->in_transaction) {
+ return $this->raiseError(MDB2_ERROR_INVALID, null, null,
+ 'savepoint cannot be released when changes are auto committed', __FUNCTION__);
+ }
+ $query = 'SAVEPOINT '.$savepoint;
+ return $this->_doQuery($query, true);
+ } elseif ($this->in_transaction) {
+ return MDB2_OK; //nothing to do
+ }
+ if (!$this->destructor_registered && $this->opened_persistent) {
+ $this->destructor_registered = true;
+ register_shutdown_function('MDB2_closeOpenTransactions');
+ }
+ $query = $this->start_transaction ? 'START TRANSACTION' : 'SET AUTOCOMMIT = 1';
+ $result =& $this->_doQuery($query, true);
+ if (PEAR::isError($result)) {
+ return $result;
+ }
+ $this->in_transaction = true;
+ return MDB2_OK;
+ }
+
+ // }}}
+ // {{{ commit()
+
+ /**
+ * Commit the database changes done during a transaction that is in
+ * progress or release a savepoint. This function may only be called when
+ * auto-committing is disabled, otherwise it will fail. Therefore, a new
+ * transaction is implicitly started after committing the pending changes.
+ *
+ * @param string name of a savepoint to release
+ * @return mixed MDB2_OK on success, a MDB2 error on failure
+ *
+ * @access public
+ */
+ function commit($savepoint = null)
+ {
+ $this->debug('Committing transaction/savepoint', __FUNCTION__, array('is_manip' => true, 'savepoint' => $savepoint));
+ if (!$this->in_transaction) {
+ return $this->raiseError(MDB2_ERROR_INVALID, null, null,
+ 'commit/release savepoint cannot be done changes are auto committed', __FUNCTION__);
+ }
+ if (!is_null($savepoint)) {
+ if (!$this->supports('savepoints')) {
+ return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+ 'savepoints are not supported', __FUNCTION__);
+ }
+ $server_info = $this->getServerVersion();
+ if (version_compare($server_info['major'].'.'.$server_info['minor'].'.'.$server_info['patch'], '5.0.3', '<')) {
+ return MDB2_OK;
+ }
+ $query = 'RELEASE SAVEPOINT '.$savepoint;
+ return $this->_doQuery($query, true);
+ }
+
+ if (!$this->supports('transactions')) {
+ return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+ 'transactions are not supported', __FUNCTION__);
+ }
+
+ $result =& $this->_doQuery('COMMIT', true);
+ if (PEAR::isError($result)) {
+ return $result;
+ }
+ if (!$this->start_transaction) {
+ $query = 'SET AUTOCOMMIT = 0';
+ $result =& $this->_doQuery($query, true);
+ if (PEAR::isError($result)) {
+ return $result;
+ }
+ }
+ $this->in_transaction = false;
+ return MDB2_OK;
+ }
+
+ // }}}
+ // {{{ rollback()
+
+ /**
+ * Cancel any database changes done during a transaction or since a specific
+ * savepoint that is in progress. This function may only be called when
+ * auto-committing is disabled, otherwise it will fail. Therefore, a new
+ * transaction is implicitly started after canceling the pending changes.
+ *
+ * @param string name of a savepoint to rollback to
+ * @return mixed MDB2_OK on success, a MDB2 error on failure
+ *
+ * @access public
+ */
+ function rollback($savepoint = null)
+ {
+ $this->debug('Rolling back transaction/savepoint', __FUNCTION__, array('is_manip' => true, 'savepoint' => $savepoint));
+ if (!$this->in_transaction) {
+ return $this->raiseError(MDB2_ERROR_INVALID, null, null,
+ 'rollback cannot be done changes are auto committed', __FUNCTION__);
+ }
+ if (!is_null($savepoint)) {
+ if (!$this->supports('savepoints')) {
+ return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+ 'savepoints are not supported', __FUNCTION__);
+ }
+ $query = 'ROLLBACK TO SAVEPOINT '.$savepoint;
+ return $this->_doQuery($query, true);
+ }
+
+ $query = 'ROLLBACK';
+ $result =& $this->_doQuery($query, true);
+ if (PEAR::isError($result)) {
+ return $result;
+ }
+ if (!$this->start_transaction) {
+ $query = 'SET AUTOCOMMIT = 0';
+ $result =& $this->_doQuery($query, true);
+ if (PEAR::isError($result)) {
+ return $result;
+ }
+ }
+ $this->in_transaction = false;
+ return MDB2_OK;
+ }
+
+ // }}}
+ // {{{ function setTransactionIsolation()
+
+ /**
+ * Set the transacton isolation level.
+ *
+ * @param string standard isolation level
+ * READ UNCOMMITTED (allows dirty reads)
+ * READ COMMITTED (prevents dirty reads)
+ * REPEATABLE READ (prevents nonrepeatable reads)
+ * SERIALIZABLE (prevents phantom reads)
+ * @return mixed MDB2_OK on success, a MDB2 error on failure
+ *
+ * @access public
+ * @since 2.1.1
+ */
+ function setTransactionIsolation($isolation)
+ {
+ $this->debug('Setting transaction isolation level', __FUNCTION__, array('is_manip' => true));
+ if (!$this->supports('transactions')) {
+ return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+ 'transactions are not supported', __FUNCTION__);
+ }
+ switch ($isolation) {
+ case 'READ UNCOMMITTED':
+ case 'READ COMMITTED':
+ case 'REPEATABLE READ':
+ case 'SERIALIZABLE':
+ break;
+ default:
+ return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+ 'isolation level is not supported: '.$isolation, __FUNCTION__);
+ }
+
+ $query = "SET SESSION TRANSACTION ISOLATION LEVEL $isolation";
+ return $this->_doQuery($query, true);
+ }
+
+ // }}}
+ // {{{ connect()
+
+ /**
+ * Connect to the database
+ *
+ * @return true on success, MDB2 Error Object on failure
+ */
+ 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']
+ && $this->connected_database_name == $this->database_name
+ ) {
+ return MDB2_OK;
+ }
+ $this->disconnect(false);
+ }
+
+ if (!PEAR::loadExtension($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[] = $this->dsn['username'] ? $this->dsn['username'] : null;
+ $params[] = $this->dsn['password'] ? $this->dsn['password'] : null;
+ if (!$this->options['persistent']) {
+ if (isset($this->dsn['new_link'])
+ && ($this->dsn['new_link'] == 'true' || $this->dsn['new_link'] === true)
+ ) {
+ $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 = $this->options['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)) {
+ return $result;
+ }
+ }
+
+ $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->supported['transactions'] = $this->options['use_transactions'];
+ if ($this->options['default_table_type']) {
+ switch (strtoupper($this->options['default_table_type'])) {
+ case 'BLACKHOLE':
+ case 'MEMORY':
+ case 'ARCHIVE':
+ case 'CSV':
+ case 'HEAP':
+ case 'ISAM':
+ case 'MERGE':
+ case 'MRG_ISAM':
+ case 'ISAM':
+ case 'MRG_MYISAM':
+ case 'MYISAM':
+ $this->supported['transactions'] = false;
+ $this->warnings[] = $this->options['default_table_type'] .
+ ' is not a supported default table type';
+ break;
+ }
+ }
+
+ $this->_getServerCapabilities();
+
+ return MDB2_OK;
+ }
+
+ // }}}
+ // {{{ setCharset()
+
+ /**
+ * Set the charset on the current connection
+ *
+ * @param string charset
+ * @param resource connection handle
+ *
+ * @return true on success, MDB2 Error Object on failure
+ */
+ function setCharset($charset, $connection = null)
+ {
+ if (is_null($connection)) {
+ $connection = $this->getConnection();
+ if (PEAR::isError($connection)) {
+ return $connection;
+ }
+ }
+ $query = "SET NAMES '".mysql_real_escape_string($charset, $connection)."'";
+ return $this->_doQuery($query, true, $connection);
+ }
+
+ // }}}
+ // {{{ 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 || $force) {
+ @mysql_close($this->connection);
+ }
+ }
+ return parent::disconnect($force);
+ }
+
+ // }}}
+ // {{{ _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->start_transaction = false;
+ $this->varchar_max_length = 255;
+
+ $server_info = $this->getServerVersion();
+ if (is_array($server_info)) {
+ if (!version_compare($server_info['major'].'.'.$server_info['minor'].'.'.$server_info['patch'], '4.1.0', '<')) {
+ $this->supported['sub_selects'] = true;
+ $this->supported['prepared_statements'] = true;
+ }
+
+ if (!version_compare($server_info['major'].'.'.$server_info['minor'].'.'.$server_info['patch'], '4.0.14', '<')
+ || !version_compare($server_info['major'].'.'.$server_info['minor'].'.'.$server_info['patch'], '4.1.1', '<')
+ ) {
+ $this->supported['savepoints'] = true;
+ }
+
+ if (!version_compare($server_info['major'].'.'.$server_info['minor'].'.'.$server_info['patch'], '4.0.11', '<')) {
+ $this->start_transaction = true;
+ }
+
+ if (!version_compare($server_info['major'].'.'.$server_info['minor'].'.'.$server_info['patch'], '5.0.3', '<')) {
+ $this->varchar_max_length = 65532;
+ }
+ }
+ }
+ }
+
+ // }}}
+ // {{{ function _skipUserDefinedVariable($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, sha1(microtime() + mt_rand())) . $prep_statement_counter++;
+ $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 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
+ * 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 $fields associative array that describes the fields and the
+ * values that will be inserted or updated in the specified table. The
+ * indexes of the array are the names of all the fields of the table. The
+ * values of the array are also associative arrays that describe the
+ * values and other properties of the table fields.
+ *
+ * Here follows a list of field properties that need to be specified:
+ *
+ * value:
+ * Value to be assigned to the specified field. This value may be
+ * of specified in database independent type format as this
+ * function can perform the necessary datatype conversions.
+ *
+ * Default:
+ * this property is required unless the Null property
+ * is set to 1.
+ *
+ * type
+ * Name of the type of the field. Currently, all types Metabase
+ * are supported except for clob and blob.
+ *
+ * Default: no type conversion
+ *
+ * null
+ * Boolean property that indicates that the value for this field
+ * should be set to null.
+ *
+ * The default value for fields missing in INSERT queries may be
+ * specified the definition of a table. Often, the default value
+ * is already null, but since the REPLACE may be emulated using
+ * an UPDATE query, make sure that all fields of the table are
+ * listed in this function argument array.
+ *
+ * Default: 0
+ *
+ * key
+ * Boolean property that indicates that this field should be
+ * handled as a primary key or at least as part of the compound
+ * unique index of the table that will determine the row that will
+ * updated if it exists or inserted a new row otherwise.
+ *
+ * This function will fail if no key field is specified or if the
+ * value of a key field is set to null because fields that are
+ * part of unique index they may not be null.
+ *
+ * Default: 0
+ *
+ * @return mixed MDB2_OK on success, a MDB2 error on failure
+ */
+ function replace($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.= $name;
+ if (isset($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;
+ }
+
+ $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->expectError(MDB2_ERROR_NOSUCHTABLE);
+ $result =& $this->_doQuery($query, true);
+ $this->popExpect();
+ if (PEAR::isError($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 $result_wrap_class string which specifies which class to wrap results in
+ * @return mixed a result handle or MDB2_OK on success, a MDB2 error on failure
+ * @access private
+ */
+ function &_execute($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;
+ }
+}
+?>
\ No newline at end of file |