(PHP 5)
stream_get_transports — Retrieve list of registered socket transports
Returns an indexed array containing the name of all socket transports available on the running system.
Returns an indexed array of socket transports names.
Example #1 Using stream_get_transports() 以上例程的输出类似于：
<?php
$xportlist = stream_get_transports();
print_r($xportlist);
?>
Array (
[0] => tcp
[1] => udp
[2] => unix
[3] => udg
)