extension_loaded()

Функции PHP

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Sep

2010

extension_loaded()

extension_loaded

(PHP 3 >= 3.0.10, PHP 4, PHP 5)

extension_loaded -- Find out whether an extension is loaded

Описание

bool extension_loaded ( string name )

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

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

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]

Замечание: extension_loaded() uses the internal extension name to test whether a certain extension is available or not. Most internal extension names are written in lower case but there may be extension available which also use uppercase letters. Be warned that this function compares case sensitive !

See also get_loaded_extensions(), get_extension_funcs(), phpinfo(), and dl().

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