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Editorial Team
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Asked: 2026-06-03T05:27:03+00:00

I’m developing a PHP application. I just moved a bunch of files over to

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I’m developing a PHP application. I just moved a bunch of files over to the production server, to discover that PDO is apparently not installed (Fatal error: Class 'PDO' not found in [file] on line [line]). The prod server is using PHP 5.3.6; according to the documentation I’ve found, “PDO and the PDO_SQLITE driver is enabled by default as of PHP 5.1.0”.

I have very little experience administering PHP. How do I tell if this module is installed but disabled, or absent altogether? And what do I need to do to get it running?

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1 Answer

  1. Editorial Team

    Generally you can just do phpinfo(); to find out what modules are installed.

    Or from the commandline:

    php -m

    Additionally you could use: class_exists('PDO') to find out whether the PDO class indeed is accessible.

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