Question

How to get protocol number associated with protocol name in PHP

Answer 1

$protocol = 'tcp';
$prot_num = getprotobyname($protocol);
if ($prot_num === FALSE) 
    echo 'Invalid Protocol';
 else 
    echo 'Protocol Number: ' . $prot_num;



/*
run:

Protocol Number: 6

*/

 

70+ SQL courses for beginners and professionals

Answer 2

$protocol = 'udp';
$prot_num = getprotobyname($protocol);
if ($prot_num === FALSE) 
    echo 'Invalid Protocol';
 else 
    echo 'Protocol Number: ' . $prot_num;



/*
run:

Protocol Number: 17

*/

 

70+ SQL courses for beginners and professionals