stream_get_filters
    (PHP 5)
stream_get_filters -- Retrieve list of registered filters
Description
array 
stream_get_filters ( void  )
     Returns an indexed array containing the name of all stream filters
     available on the running system.
    
     
Example 1. Using stream_get_filters() 
<?php $streamlist = stream_get_filters(); print_r($streamlist); ?>
 |  
 
       Output will be similar to the following.
       Note: there may be more or fewer filters in your version of PHP.
       Array (
  [0] => string.rot13
  [1] => string.toupper
  [2] => string.tolower
  [3] => string.base64
  [4] => string.quoted-printable
)  |  
  | 
    
     See also
     stream_filter_register(), and
     stream_get_wrappers().