getprotobyname

Description

getprotobyname() returns the protocol number associated with the protocol name as per /etc/protocols.

Example 1. getprotobyname() example <?php $protocol = 'tcp'; $get_prot = getprotobyname($protocol); if ( $get_prot == -1 ) { // if nothing found, returns -1 print 'Invalid Protocol'; } else { print 'Protocol #'.$get_prot; } ?>

See also: getprotobynumber().