18 lines
833 B
Plaintext
18 lines
833 B
Plaintext
Lazy-connecting to database is handled via Doctrine_Db wrapper. When using Doctrine_Db instead of PDO / Doctrine_Adapter, lazy-connecting to database is being performed (that means Doctrine will only connect to database when needed).
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This feature can be very useful when using for example page caching, hence not actually needing a database connection on every request. Remember connecting to database is an expensive operation.
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<code type="php">
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// we may use PDO / PEAR like DSN
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// here we use PEAR like DSN
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$dbh = new Doctrine_Db('mysql://username:password@localhost/test');
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// !! no actual database connection yet !!
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// initalize a new Doctrine_Connection
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$conn = Doctrine_Manager::connection($dbh);
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// !! no actual database connection yet !!
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// connects database and performs a query
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$conn->query('FROM User u');
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</code>
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