IP Monitoring script


I'm lookinf for a script that monitors an IP address. If the IP address is pingable, the HTML page will display a green icon image and if the IP address is not pingable, the HTML page will display a red icon image.

After searching in the google I find the following script but I think it's not working properly :


// Change the URLs below to match the location of the status images
$online = "online.gif";
$offline = "offline.gif";

// Change the address & port
$addr = "www.yahoo.com";
$port = 80;

// No need to edit the lines below!
$churl = @fsockopen($addr, $port, $errno, $errstr, 20);
if (!$churl) {
header("Location: $offline");
} else {
header("Location: $online");


LVL 16
Sohel RanaAsked:
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Hi rsdn,

The script's idea basically works and I think it does work.  But I used the same function call and structure to make the following script and I think it'd be a better example or more suitable for your usage:


// list of addresses to test
$addr = Array("www.yahoo.com", "www.yahoo.com4");
$port = Array(80, 80);

// print out status of the addresses
for($i = 0; $i < count($addr); $i++)
  $churl = @fsockopen($addr[$i], $port[$i], $errno, $errstr, 20);
  if (!$churl)
    print "$addr[$i] is offline<br>\n";
    print "$addr[$i] is online<br>\n";


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Looks like this script only does web addresses (computers hosting http, maybe ftp).
To test if a box is pingable you might do a system('ping') and parse the results.. maybe get fancy with it.
To use the system ping comand, change:

  $churl = @fsockopen($addr[$i], $port[$i], $errno, $errstr, 20);
  if (!$churl)


  if(strpos(shell_exec("ping {$addr[$i]}"),"TTL"))

you can also get rid of the $port array

You can also play with the "ping <address>" command to specify maximum wait time and number of pings etc...
Sohel RanaAuthor Commented:
Hi :

@ inq123:

Thanks for the code it's working without graphics.

@ basiclife:

After I change those lines it shows me the following error. Thanks for your try.

Parse error: parse error, unexpected '}' in /home/web/public_html/matrix/temp/ipcheck_main.php on line 15

Hmm well to skip the use of the {}'s...

if(strpos(shell_exec("ping " . $addr[$i]),"TTL"))
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