phpversion Gets the current PHP version stringphpversion stringextension Returns a string containing the version of the currently running PHP parser. If the optional extension parameter is specified, phpversion returns the version of that extension, or &false; if there is no version information associated or the extension isn't enabled. This information is also available in the predefined constant PHP_VERSION. ]]> See also version_compare, phpinfo, phpcredits, php_logo_guid, and zend_version.