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Customer Support
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What PHP modules are available and how do I load
them?
You have a file called /etc/php.ini (or /etc/php5/php.ini for PHP5) that you can edit to set which PHP modules are automatically loaded when your scripts execute. Most people just use the OnSite PHP Configurator to enable PHP extensions. Or, you can follow the instructions below describing how to manually edit this file to enable the extensions you want.
In your php.ini file is a section called "Dynamic Extensions". By default, all the extension modules are commented out (by having a semicolon appear at the beginning of the line) except the MySQL module called mysql.so. To enable a particular module for yourself, just find the line in php.ini that lists the module you want to use and uncomment it by removing the semicolon at the beginning of the line. For best PHP performance, you should only enable the extensions your website requires.
You can also use the dl() function to dynamically load the extension you want at runtime instead of editing your php.ini file. That will make it so that you only load the module on the pages where you need it, allowing PHP to run faster on the pages that do not need it.
To see which PHP extensions are available, please visit our phpinfo() page for PHP4 or PHP5. You can also load your own extensions.
As of PHP 4.3.0, zlib, openssl and pcre extensions are statically compiled into the core, which means they are always available and you should not try to load them as external extensions in php.ini or in dl() calls.
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