getmxrr
getprotobyname()
=====================
getprotobyname() gives the protocol number for the given protocol name on the local system.
If the protocol is not recognized, then the function returns -1.
The given code snippet gives the list of protocols along with their protocol numbers
<?
$arr=array("ip","icmp","ggp","tcp",
"egp","pup","udp","hmp","xns-idp",
"rdp","rvd" );
//Reads the names of protocols into an array..
for($i=0;$i<11;$i++)
{
$proname=$arr[$i];
echo $proname .":", getprotobyname ($proname)."<br />";
}
?>
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.
Parameters
- name
-
The protocol name.
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;
}
?>
add a note
User Contributed Notesgetprotobyname
Vipindas K.S
08-May-2008 03:33
08-May-2008 03:33