text: *extension_loaded* -- Find out whether an extension is loaded
  
    bool extension_loaded(string name)~
  
  Finds out whether the extension is loaded.
  
  {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]
  
  
  
  Returns TRUE if the extension identified by {name} is loaded, FALSE otherwise.
  
  |extension_loaded| example
  
  <?php >
    if (!extension_loaded('gd')) {
        if (!dl('gd.so')) {
            exit;
        }
    }
  ?>
  
  
  
  
  
  Version Description 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.
  
  |get_loaded_extensions| |get_extension_funcs| |phpinfo| |dl|
  
  vim:ft=help:
  