PHP: extension_loaded

Description

extension_loaded(string $extension): bool

Finds out whether the extension is loaded.

Parameters

extension

The 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 Values

Returns true if the extension identified by extension is loaded, false otherwise.

Examples

Example #1 extension_loaded() example

<?php
if (!extension_loaded('gd')) {
    if (!dl('gd.so')) {
        exit;
    }
}
?>

extension_loaded

Description

Parameters

Return Values

Examples

See Also

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