Check status of TCP port with PHP

Posted on 2003-03-17
Medium Priority
Last Modified: 2008-02-01
Below is some neglected code for checking TCP ports with PHP.

However I keep getting the following errors.
Can someone who has experience with fsocketopen function take a look at this?
I'm not sure why it cannot modify the header info, that's a new one to me.

Notice: Undefined variable: link in e:\inetpub\www\intranet\status\status.php on line 16
Notice: Undefined offset: 1 in e:\inetpub\www\intranet\status\status.php on line 16
Warning: Cannot modify header information - headers already sent by (output started at e:\inetpub\www\intranet\status\status.php:16) in e:\inetpub\www\intranet\status\status.php on line 23

PS if anyone knows of another PHP script that can monitor TCP ports and is reliable, please let me know.
This is the only script I came across after hours of looking.
Question by:calebudy
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Accepted Solution

ASCII_Man earned 300 total points
ID: 8157543
Here's a completely modified version that will do what you want.

Just save is as status.php in the same directory as the original and update the server address specific setup lines as usual.
BEGIN status.php
// Modified Web Server Status v 1.2, Copyright 2002 By Ryan Schwiebert, visit http://www.schwebdesigns.com/
// See http://www.experts-exchange.com/Web/Web_Languages/PHP/Q_20554037.html

//Please change to your server specifications

$live = "http://tech_01/status/live.gif";
$dead = "http://tech_01/status/dead.gif";
$defaultPort = 80;
$separator = ':';
$waitTime = 5;


$link = $HTTP_GET_VARS['link'];

if($separator == ':'){
     if(strstr($link, $separator)){
          if(substr($link, 0, 6) == 'http://'){
               list($URI, $port) = explode($separator, substr($link, 6, 0));
               list($URI, $port) = explode($separator, $link);
          $URI = str_replace('http://', '', $link);
          $port = $defaultPort;
     list($URI, $port) = explode($separator, $link);

     $port = 80;

//Test the server connection
$checkURI = @fsockopen(server($URI), $port, $errno, $errstr, $waitTime);

     header("Location: $live");            
//     echo 'good';
     header("Location: $dead");
//     echo 'dead';
function server($addr){
          $addr = substr($addr, 0, strpos($addr, "/"));
     return $addr;
END status.php

I'd also suggest that you award more points for a thread where you request someone to write a script for you.

Expert Comment

ID: 8157547
Err, strike that comment.
I guess you didn't request the script, just some help... but hey, I thought it was ugly anyway :)
LVL 33

Expert Comment

ID: 11934681
No comment has been added to this question in more than 21 days, so it is now classified as abandoned.

I will leave the following recommendation for this question in the Cleanup topic area:
    Accept: ASCII_Man {http:#8157543}

Any objections should be posted here in the next 4 days. After that time, the question will be closed.

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