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<?php
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/*
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* This file is part of the symfony package.
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* (c) 2004-2006 Fabien Potencier <fabien.potencier@symfony-project.com>
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* (c) 2004-2006 Sean Kerr <sean@code-box.org>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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/**
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* sfMySQLDatabase provides connectivity for the MySQL brand database.
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*
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* <b>Optional parameters:</b>
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*
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* # <b>database</b> - [none] - The database name.
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* # <b>host</b> - [localhost] - The database host.
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* # <b>username</b> - [none] - The database username.
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* # <b>password</b> - [none] - The database password.
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* # <b>persistent</b> - [No] - Indicates that the connection should be persistent.
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*
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* @package symfony
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* @subpackage database
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* @author Fabien Potencier <fabien.potencier@symfony-project.com>
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* @author Sean Kerr <sean@code-box.org>
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* @version SVN: $Id: sfMySQLDatabase.class.php 23810 2009-11-12 11:07:44Z Kris.Wallsmith $
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*/
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class sfMySQLDatabase extends sfDatabase
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{
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/**
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* Connects to the database.
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*
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* @throws <b>sfDatabaseException</b> If a connection could not be created
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*/
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public function connect()
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{
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$database = $this->getParameter('database');
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$host = $this->getParameter('host', 'localhost');
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$password = $this->getParameter('password');
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$username = $this->getParameter('username');
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$encoding = $this->getParameter('encoding');
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// let's see if we need a persistent connection
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$connect = $this->getConnectMethod($this->getParameter('persistent', false));
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if ($password == null)
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{
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if ($username == null)
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{
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$this->connection = @$connect($host);
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}
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else
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{
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$this->connection = @$connect($host, $username);
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}
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}
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else
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{
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$this->connection = @$connect($host, $username, $password);
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}
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// make sure the connection went through
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if ($this->connection === false)
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{
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// the connection's foobar'd
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throw new sfDatabaseException('Failed to create a MySQLDatabase connection.');
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}
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// select our database
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if ($this->selectDatabase($database))
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{
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// can't select the database
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throw new sfDatabaseException(sprintf('Failed to select MySQLDatabase "%s".', $database));
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}
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// set encoding if specified
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if ($encoding)
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{
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@mysql_query("SET NAMES '".$encoding."'", $this->connection);
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}
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// since we're not an abstraction layer, we copy the connection
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// to the resource
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$this->resource = $this->connection;
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}
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/**
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* Returns the appropriate connect method.
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*
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* @param bool $persistent wether persistent connections are use or not
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* @return string name of connect method.
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*/
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protected function getConnectMethod($persistent)
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{
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return $persistent ? 'mysql_pconnect' : 'mysql_connect';
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}
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/**
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* Selects the database to be used in this connection
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*
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* @param string $database Name of database to be connected
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*
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* @return bool true if this was successful
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*/
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protected function selectDatabase($database)
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{
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return ($database != null && !@mysql_select_db($database, $this->connection));
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}
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/**
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* Execute the shutdown procedure
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*
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* @return void
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*
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* @throws <b>sfDatabaseException</b> If an error occurs while shutting down this database
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*/
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public function shutdown()
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{
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if ($this->connection != null)
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{
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@mysql_close($this->connection);
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}
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}
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}
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