(PHP 5 >= 5.4.0)
socket_import_stream — Import a stream
$stream
   )Imports a stream that encapsulates a socket into a socket extension resource.
streamThe stream resource to import.
   Returns FALSE or NULL on failure.
  
Example #1 socket_import_stream() example
<?php
$stream = stream_socket_server("udp://0.0.0.0:58380", $errno, $errstr, STREAM_SERVER_BIND); 
$sock   = socket_import_stream($stream);
?>