PHP/Network/getprotobyname
Using getprotobyname()
<source lang="html4strict">
<?php
$proto = "smp"; $proto_num = getprotobyname($proto); if($proto_num == -1) { die("Could not find protocol "$proto"\n"); } else { echo "The "$proto" protocol has an ID of $proto_num\n"; }
?>
</source>