. PHP Manual . Prev . Next . (3.0.10 - 3.0.18 only, PHP 4 >= 4.0.0) extension_loaded -- Find out whether an extension is loaded . bool extension_loaded ( string name) . Returns TRUE if the extension identified by name is loaded. You can see the names of various extensions by using phpinfo() . See also phpinfo() . Note: This function was added in 3.0.10. Prev . Home . Next . assert_options . Up . dl