getprotobyname
Note that by the time of writing this note (5.3.3), there seems to be only two defined constants for the protocol numbers: SOL_UDP and SOL_TCP.
For all other protocols (like ICMP,... ) you'll have to provide the exact number (EG: 1 for ICMP, ... )
<?php
echo getprotobynumber(SOL_TCP) . "\n"; // prints tcp
echo getprotobynumber(SOL_UDP) . "\n"; // prints udp
var_dump(getprotobyname('tcp') == SOL_TCP); // bool(true)
var_dump(getprotobyname('udp') == SOL_UDP); // bool(true)
?>
On a UNIX system (don't know if this is true for Windows), the php functions getprotobyname and getprotobynumber are just wrapper for their corresponding system calls. These functions returns the protocol name or protocol number based on the definition from IANA. If you are looking for a protocol and you don't know its number, you can find the exact protocol number here: http://www.iana.org/assignments/protocol-numbers
getprotobynumber
(PHP 4, PHP 5)
getprotobynumber — Obtiene el nombre de protocolo asociado con un número de protocolo
Descripción
string getprotobynumber
( int
$number
)
getprotobynumber() devuelve el nombre de protocolo
asociado con el numero de procotolo, como lo
indica /etc/protocols.
Parámetros
-
number -
El número del protocolo.
Valores devueltos
Devuelve el nombre del protocolo como una cadena, o FALSE en caso de error.
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User Contributed Notes
getprotobynumber - [2 notes]
recycling dot sp dot am at gmail dot com ¶
2 years ago
Vipindas K.S ¶
5 years ago
getprotobynumber()
=====================
getprotobynumber() gets the protocol name for the given protocol number on the local system. If the protocol number is not recognized,the function returns FALSE.The given code snippet gives the list of protocols along with their protocol numbers
<?
$format = "%6s %s\n<br />";
for ($number = 0; $number < 255; $number++)
{
if (getprotobynumber ($number))
printf ($format, " $number-->", getprotobynumber ($number));
}
?>
OUTPUT:
0--> ip
1--> icmp
3--> ggp
6--> tcp
8--> egp
12--> pup
17--> udp
20--> hmp
22--> xns-idp
27--> rdp
66--> rvd