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<?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 1.170 2006/10/31 18:46:43 lsmith Exp $///*** MDB2 MySQL driver** @package MDB2* @category Database* @author Lukas Smith <smith@pooteeweet.org>*/class MDB2_Driver_mysql extends MDB2_Driver_Common{// {{{ propertiesvar $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 $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)) {$ecode_map = array(1004 => MDB2_ERROR_CANNOT_CREATE,1005 => MDB2_ERROR_CANNOT_CREATE,1006 => MDB2_ERROR_CANNOT_CREATE,1007 => MDB2_ERROR_ALREADY_EXISTS,1008 => MDB2_ERROR_CANNOT_DROP,1022 => MDB2_ERROR_ALREADY_EXISTS,1044 => MDB2_ERROR_ACCESS_VIOLATION,1046 => MDB2_ERROR_NODBSELECTED,1048 => MDB2_ERROR_CONSTRAINT,1049 => MDB2_ERROR_NOSUCHDB,1050 => MDB2_ERROR_ALREADY_EXISTS,1051 => MDB2_ERROR_NOSUCHTABLE,1054 => MDB2_ERROR_NOSUCHFIELD,1061 => MDB2_ERROR_ALREADY_EXISTS,1062 => MDB2_ERROR_ALREADY_EXISTS,1064 => MDB2_ERROR_SYNTAX,1091 => MDB2_ERROR_NOT_FOUND,1100 => MDB2_ERROR_NOT_LOCKED,1136 => MDB2_ERROR_VALUE_COUNT_ON_ROW,1142 => MDB2_ERROR_ACCESS_VIOLATION,1146 => MDB2_ERROR_NOSUCHTABLE,1216 => MDB2_ERROR_CONSTRAINT,1217 => MDB2_ERROR_CONSTRAINT,);}if ($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 $text;}// }}}// {{{/*** Start a transaction or set a savepoint.** @param string name of a savepoint to set* @return mixed MDB2_OK on success, a MDB2 error on failure** @access public*/function beginTransaction($savepoint = null){$this->debug('Starting transaction/savepoint', __FUNCTION__, array('is_manip' => true, 'savepoint' => $savepoint));if (!is_null($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&& $this->opened_persistent == $this->options['persistent']) {return MDB2_OK;}$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->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;}}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 character_set_client = '".mysql_real_escape_string($charset, $connection)."'";$result = @mysql_query($query, $connection);if (!$result) {return $this->raiseError(null, null, null,'Unable to set client charset: '.$charset, __FUNCTION__);}return MDB2_OK;}// }}}// {{{ 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);}if ($is_manip) {return $query . " LIMIT $limit";} else {return $query . " LIMIT $offset, $limit";}}return $query;}// }}}// {{{ getServerVersion()/*** return version information about the server** @param string $native determines if the raw version string should be returned* @return mixed array/string with version information or MDB2 error object* @access public*/function getServerVersion($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;}// }}}// {{{ prepare()/*** Prepares a query for multiple execution with execute().* With some database backends, this is emulated.* prepare() requires a generic query as string like* 'INSERT INTO numbers VALUES(?,?)' or* 'INSERT INTO numbers VALUES(:foo,:bar)'.* The ? and :[a-zA-Z] and are placeholders which can be set using* bindParam() and the query can be send off using the execute() method.** @param string $query the query to prepare* @param mixed $types array that contains the types of the placeholders* @param mixed $result_types array that contains the types of the columns in* the result set 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 = $new_pos;continue; //evaluate again starting from the new position}if ($query[$position] == $placeholder_type_guess) {if (is_null($placeholder_type)) {$placeholder_type = $query[$p_position];$question = $colon = $placeholder_type;}if ($placeholder_type == ':') {$parameter = preg_replace('/^.{'.($position+1).'}([a-z0-9_]+).*$/si', '\\1', $query);if ($parameter === '') {$err =& $this->raiseError(MDB2_ERROR_SYNTAX, null, null,'named parameter with an empty name', __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 $connection;}$statement_name = sprintf($this->options['statement_format'], $this->phptype, md5(time() + rand()));$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'], $type);}$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=8051return $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 = $this->db->options['portability'] & MDB2_PORTABILITY_EMPTY_TO_NULL;if ($mode) {$this->db->_fixResultArrayValues($row, $mode);}if (!empty($this->types)) {$row = $this->db->datatype->convertResultRow($this->types, $row, false);}if (!empty($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 (is_null($rows)) {if ($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 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' || $type == 'blob') {if (!is_resource($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 = $data;}}$param_query = 'SET @'.$parameter.' = '.$this->db->quote($value, $type);$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;}}?>