extension_loaded
Find out whether an extension is loaded
Description
bool extension_loaded
( string $name
)
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
- get_extension_funcs
- phpinfo
- dl
- function_exists