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copied!<p>There is no <strong>connection pooling</strong> in php.<br> <strong>mysql_pconnect</strong> and <strong>connection pooling</strong> are two different things. There are many problems connected with <code>mysql_pconnect</code> and first you should read the manual and carefully use it, but this is not connection pooling.</p> <p>Connection pooling is a technique where the application server manages the connections. When the application needs a connection it asks the application server for it and the application server returns one of the pooled connections if there is one free.</p> <p>We can do connection scaling in php for that please go through following link: <a href="http://www.oracle.com/technetwork/articles/dsl/white-php-part1-355135.html" rel="nofollow noreferrer">http://www.oracle.com/technetwork/articles/dsl/white-php-part1-355135.html</a></p> <p>So no connection pooling in php.</p> <p>As Julio said apache releases all resources when the request ends for the current reques. You can use mysql_pconnect but you are limited with that function and you must be very careful. Other choice is to use singleton pattern, but none of this is pooling.</p> <p>This is a good article: <a href="https://blogs.oracle.com/opal/highly-scalable-connection-pooling-in-php" rel="nofollow noreferrer">https://blogs.oracle.com/opal/highly-scalable-connection-pooling-in-php</a></p> <p>Also read this one <a href="http://www.apache2.es/2.2.2/mod/mod_dbd.html" rel="nofollow noreferrer">http://www.apache2.es/2.2.2/mod/mod_dbd.html</a></p>

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