PHP/Network/getprotobynumber

Using getprotobynumber()

   <source lang="html4strict">

<?php

   $proto_num = SOL_TCP;
   $proto = getprotobynumber($proto_num);
   if($proto === false) {
       die("Could not find protocol with ID $proto_num\n");
   } else {
       echo "The protocol with ID $proto_num is "$proto"\n";
   }

?>

 </source>