72 lines
1.8 KiB
PHP
72 lines
1.8 KiB
PHP
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<?php ?>
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From the start Doctrine has been designed to work with multiple connections. Unless separately specified Doctrine always uses the current connection
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for executing the queries. The following example uses openConnection() second argument as an optional
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connection alias.
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<br \><br \>
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<?php
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renderCode("<?php
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// Doctrine_Manager controls all the connections
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\$manager = Doctrine_Manager::getInstance();
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// open first connection
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\$conn = \$manager->openConnection(new PDO('dsn','username','password'), 'connection 1');
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?>
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");
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?>
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<br \><br \>
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For convenience Doctrine_Manager provides static method connection() which opens new connection when arguments are given to it and returns the current
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connection when no arguments have been speficied.
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<br \><br \>
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<?php
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renderCode("<?php
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// open first connection
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\$conn = Doctrine_Manager::connection(new PDO('dsn','username','password'), 'connection 1');
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\$conn2 = Doctrine_Manager::connection();
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// \$conn2 == \$conn
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?>
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");
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?>
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<br \><br \>
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The current connection is the lastly opened connection.
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<br \><br \>
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<?php
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renderCode("<?php
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// open second connection
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\$conn2 = \$manager->openConnection(new PDO('dsn2','username2','password2'), 'connection 2');
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\$manager->getCurrentConnection(); // \$conn2
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?>");
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?>
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<br \><br \>
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You can change the current connection by calling setCurrentConnection().
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<br \><br \>
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<?php
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renderCode("<?php
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\$manager->setCurrentConnection('connection 1');
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\$manager->getCurrentConnection(); // \$conn
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?>
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");
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?>
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<br \><br \>
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You can iterate over the opened connection by simple passing the manager object to foreach clause. This is possible since Doctrine_Manager implements
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special IteratorAggregate interface.
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<br \><br \>
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<?php
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renderCode("<?php
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// iterating through connections
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foreach(\$manager as \$conn) {
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}
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?>");
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?>
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