extension_loaded

(PHP 4, PHP 5)

extension_loadedFind out whether an extension is loaded

Opis

bool extension_loaded ( string $name )

Finds out whether the extension is loaded.

Parametry

name

The extension name.

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]

Zwracane wartości

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

Przykłady

Przykład #1 extension_loaded() example

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

Rejestr zmian

Wersja Opis
5.0.0 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 extensions available which also use uppercase letters. Prior to PHP 5, this function compared the names case sensitively.

Zobacz też:

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User Contributed Notes 1 note

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Marl
1 month ago
The explanation above renders this function useless.
I can check phpinfo() to determine the name of the extension.

If it's in the display that proves that it's loaded.

If not, I might know the dll name (php_printer.dll) but I don't know the name of the extension.
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