Before you create your own server stat script in PHP, it is must to check your ports are responding.  You should aware when one of your services are down, such as HTTP, MySQL, POP/SMTP, etc.  Also, other information you should know the current server loads, and users which will be the chief  indicator of a runaway script, or process.

So let’s start.

Make sure your php script ALWAYS must start with <?php  this tells your server that it is in fact a php script

<?php

//You can replace the domain with an IP if you wish

$site = “mysite.com”;  //this is the site you wish to check

// Let’s check our common ports 80, 21, and 110
$http = fsockopen($site, 80);
$ftp = fsockopen($site, 21);
$pop3 = fsockopen($site, 110);

if ($http) {
$status .= “<font face=\”Arial\”><font size=\”2\”><b>HTTP</b>: Working</font></font><br>”;
}
else {
$status .= “<font face=\”Arial\”><font size=\”2\”><b>HTTP</b>: Not Working</font></font><br>”;
}

if ($ftp) {
$status .= “<font face=\”Arial\”><font size=\”2\”><b>FTP</b>: Working</font></font><br>”;
}
else {
$status .= “<font face=\”Arial\”><font size=\”2\”><b>FTP</b>: Not Working</font></font><br>”;
}

if ($pop3) {
$status .= “<font face=\”Arial\”><font size=\”2\”><b>POP3/SMTP</b>: Working</font></font><br>”;
}
else {
$status .= “<font face=\”Arial\”><font size=\”2\”><b>POP3/SMTP</b>: Not Working</font></font><br>”;
}
echo(”$status”);

echo(”<hr>”);

// Users and load information
$reguptime = trim(exec(”uptime”));
if ($reguptime) {
if (preg_match(”/, *(\d) (users?), .*: (.*), (.*), (.*)/”, $reguptime, $uptime)) {
$users[0] = $uptime[1];
$users[1] = $uptime[2];
$loadnow = $uptime[3];
$load15 = $uptime[4];
$load30 = $uptime[5];
}
} else {
$users[0] = “Unavailable”;
$users[1] = “–”;
$loadnow = “Unavailable”;
$load15 = “–”;
$load30 = “–”;
}

echo(”<b>Current Users:</b> $users[0]<br>
<b>Current Load:</b> $loadnow<br><b>Load 15 mins ago:</b> $load15<br><b>Load 15 mins ago:</b> $load30<br><hr>”);

// Operating system
$fp = @fopen(”/proc/version”, “r”);
if ($fp) {
$temp = fgets($fp);
fclose($fp);

if (preg_match(”/version (.*?) /”, $temp, $osarray)) {
$kernel = $osarray[1];
preg_match(”/[0-9]{5,} (\((.* *)\)\))/”, $temp, $osarray);
$flavour = $osarray[2];
$operatingsystem = $flavour.” (”.PHP_OS.” “.$kernel.”)”;
if (preg_match(”/SMP/”, $buf)) {
$operatingsystem .= ” (SMP)”;
}
} else {
$result = “(N/A)”;
}
} else {
$result = “(N/A)”;
}

echo(”<b>Operating System:</b><br>$operatingsystem”);
?>

The above code when uploaded to your server, it will display the status of your services, your user and load averages.

Now you can work with this, and make it look however you want, add new ports, etc.

Remember, this is just a very basic stat script.

Key Issues
One of the key issues you should aware that your host will need to allow the exec() funtion, in order for this to work properly.