getprotobyname
(PHP 4, PHP 5)
getprotobyname -- Get protocol number associated with protocol name
Description
int
getprotobyname ( string name )
getprotobyname() returns the protocol number
associated with the protocol name as per
/etc/protocols.
Return Values
Returns the protocol number or -1 if the protocol is not found.
Examples
Example 1. getprotobyname() example
<?php
$protocol = 'tcp';
$get_prot = getprotobyname($protocol);
if ($get_prot == -1) {
echo 'Invalid Protocol';
} else {
echo 'Protocol #' . $get_prot;
}
?>
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