code failing now...

mateo107

hi guys,

I'm using the following code on one webserver i have (linux, with php 4.x).

I'm trying to implement this on another webserver (windows, php5) and it 'fails'... it always shows offline, even when testing the localhost! I'm a complete N00B to PHP, so please be gentle (any and ALL suggestions welcome).

I don't know if it's a PHP version problem or the switch between linux/windows thats causing it to fail.

Thanks in advance!

<?php 
function ping($server) { 
    $ping = shell_exec('ping -c 2 -t 5 ' . $server . ''); 
    #$reply = preg_match('/([0-2]) packets received/', $ping, $data);      

    $reply = preg_match('/([0-2]) received/', $ping, $data); 
    $packets = intval($data[1]); 
    if($packets>0) 
    { 
        $status = "{$server} <font color=\"green\">Online</font><br>"; 
    } 
    elseif($packets==0) 
    { 
        $status = "{$server} <font color=\"red\">Offline</font><br>"; 
    } 
    else 
    { 
        $status = "{$server} <font color=\"black\">Unknown</font><br>"; 
    } 
    return $status;     

} 
// Test ping: COMPerfection.com 
#ping('www.google.com'); 
echo ping('www.website1.com'); 
echo ping('www.website2.com'); 
?>

bogu

What does it do "ping -c 2" under windows?

mateo107

thanks for your input bogu! -c is actually an invalid command in windows... i don't know unix/linux very well (at all) but i think what the commands were doing in linux were setting it to only ping each device 2 times (count?) and i'm not sure what the other -t is for...

anyway, i've altered the code so that it looks like this:
$ping = shell_exec('ping -n 2' . $server . '');

because the ping command I want to run (in windows) would be:
ping -n 2 (servername).

The results from this (if outputted to a DOS) command would be:

Pinging (servername) [server ip address] with 32 bytes of data:

Reply from (ip address): bytes = 32 time<(time response) TTYL = x
Reply from (ip address): bytes = 32 time<(time response) TTYL = x

Ping statistics for (ip):
     Packets sent = x, Received = x, Lost = x (x% loss)
Approximate round trip times in milli-seconds:
     Minimum = xms, Maximum = xms, Average = xms

Where x's = numbers.

So, is my script now pulling the wrong information, since windows comes back with a different amount of data than unix (i'm assuming). How would I get it to find that loss percentage and work off of that (if 0 = online, if = 100 offline, if other = unknown).

mateo107

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