extension_loaded
(PHP 4, PHP 5, PHP 7)
extension_loaded — Find out whether an extension is loaded
Description
bool extension_loaded ( string $name )Finds out whether the extension is loaded.
Parameters
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]Return Values
Returns TRUE if the extension identified by name is loaded, FALSE otherwise.
Examples
Example #1 extension_loaded() example
<?php
if?(!extension_loaded('gd'))?{
????if?(!dl('gd.so'))?{
????????exit;
????}
}
?>See Also
- get_loaded_extensions() - Returns an array with the names of all modules compiled and loaded
- get_extension_funcs() - Returns an array with the names of the functions of a module
- 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
← dl
gc_collect_cycles →
? 1997–2017 The PHP Documentation GroupLicensed under the Creative Commons Attribution License v3.0 or later.
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