Find out whether an extension is loaded
Syntax
extension_loaded(string $extension): bool
Parameters
extensionThe extension name. This parameter is case-insensitive.
You can see the names of various extensions by using phpinfo() or if you're using the CGI or CLI version of PHP you can use the -m switch to list all available extensions:
$ php -m [PHP Modules] xml tokenizer standard sockets session posix pcre overload mysql mbstring ctype [Zend Modules]
Return
Returns true if the extension identified by extension is loaded, false otherwise.
Examples
1
<?
if(!extension_loaded('gd'))
{
if(!dl('gd.so'))
{
exit;
}
}
?>
