PHP Unconference Europe 2015

getprotobyname

(PHP 4, PHP 5)

getprotobynameGet 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 FALSE on failure.

Examples

Example #1 getprotobyname() example

<?php
$protocol 
'tcp';
$get_prot getprotobyname($protocol);
if (
$get_prot === FALSE) {
    echo 
'Invalid Protocol';
} else {
    echo 
'Protocol #' $get_prot;
}
?>

See Also

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User Contributed Notes 1 note

up
-1
Vipindas K.S
6 years ago
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 />";
}

?>
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