[英]Connecting to Multiple Databases in Joomla Using JDatabase
It is possible to create connections to multiple databases using the JDatabase::getInstance()
method. 可以使用JDatabase::getInstance()
方法创建与多个数据库的JDatabase::getInstance()
。 The following link points to a tutorial that describes how to create a helper file that makes it easy to create multiple JDatabase instances that point to different databases. 以下链接指向一个教程,该教程描述了如何创建一个帮助文件,该文件使创建指向不同数据库的多个JDatabase实例变得容易。 You can create the database instances in the following manner using the custom helper class. 您可以使用定制帮助程序类以以下方式创建数据库实例。
$db = JFactory::getDBO();
$db2 = MyDataHelper::getDBO2();
$db3 = MyDataHelper::getDBO3();
You can still get the default database object normally using JFactory. 您仍然可以正常使用JFactory获取默认数据库对象。
You can add your own array of options to JDatabaseDriver
, like so: 您可以将自己的选项数组添加到JDatabaseDriver
,如下所示:
$db = JFactory::getDbo();
$option2 = array();
$option2['driver'] = 'mysqli'; // Database driver name
$option2['host'] = 'localhost'; // Database host name
$option2['user'] = 'DB_USER'; // User for database authentication
$option2['password'] = 'DB_PASS'; // Password for database authentication
$option2['database'] = 'DB_NAME'; // Database name
$option2['prefix'] = 'jos_'; // Database prefix (may be empty)
$db2 = JDatabaseDriver::getInstance($option2);
$option3 = array();
$option3['driver'] = 'mysqli'; // Database driver name
$option3['host'] = 'localhost'; // Database host name
$option3['user'] = 'DB_USER'; // User for database authentication
$option3['password'] = 'DB_PASS'; // Password for database authentication
$option3['database'] = 'DB_NAME'; // Database name
$option3['prefix'] = 'jos_'; // Database prefix (may be empty)
$db3 = JDatabaseDriver::getInstance($option3);
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