Javascript debugger
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extension_loaded
Find out whether an extension is loaded
(PHP 4, PHP 5)
bool extension_loaded ( string name )
Parameters
- name
The extension name.
You can see the names of various extensions by using phpinfo() or if you're using the
CGIorCLIversion of PHP you can use the-mswitch to list all available extensions:$ php -m
[PHP Modules]
xml
tokenizer
standard
sockets
session
posix
pcre
overload
mysql
mbstring
ctype
[Zend Modules]
Examples
Example 1833. extension_loaded() example
<?php
if (!extension_loaded('gd')) {
if (!dl('gd.so')) {
exit;
}
}
?>
Notes
Note:
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 !