php 한글 메뉴얼 도움말 검색 사이트 Find out whether an extension is loaded [function.extension-loaded]

설명

bool extension_loaded ( string $name )

Finds out whether the extension is loaded.

인수

name

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]

반환값

Returns TRUE if the extension identified by name is loaded, FALSE otherwise.

예제

Example #1 extension_loaded() example


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

참고

get_loaded_extensions() - 적재된 모든 모듈명을 배열로 반환합니다
get_extension_funcs() - 모듈 함수명을 배열로 반환
phpinfo() - Outputs information about PHP's configuration
dl() - Loads a PHP extension at runtime
function_exists() - Return TRUE if the given function has been defined