Description
array 
stream_get_wrappers ( void  )
     Returns an indexed array containing the name of all stream wrappers
     available on the running system.
    
     
Example 1. stream_get_wrappers() example 
<?php print_r(stream_get_wrappers()); ?>
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 The above example will output 
something similar to: Array
(
    [0] => php
    [1] => file
    [2] => http
    [3] => ftp
    [4] => compress.bzip2
    [5] => compress.zlib
) |  
  | 
    
     
Example 2. Checking for the existence of a stream wrapper 
<?php // check for the existence of the bzip2 stream wrapper if (in_array('compress.bzip2', stream_get_wrappers())) {     echo 'compress.bzip2:// support enabled.'; } else {     echo 'compress.bzip2:// support not enabled.'; } ?>
 |  
  | 
    
     See also
     stream_wrapper_register().