Checking if process still running?

Question

As a way to build a poor-man\'s watchdog and make sure an application is restarted in case it crashes (until I figure out why), I need to write a PHP CLI script that will be

Answer 1

i have a function to get the pid of a process...

function getRunningPid($processName) {
    $pid = 0;
    $processes = array();
    $command = 'ps ax | grep '.$processName;
    exec($command, $processes);
    foreach ($processes as $processString) {
        $processArr = explode(' ', trim($processString));
            if (
            (intval($processArr[0]) != getmypid())&&
            (strpos($processString, 'grep '.$processName) === false)
        ) {
            $pid = intval($processArr[0]);
        }
    }
    return $pid;
}