Run some processes to show cpulimit work

cpulimit-daemonize-sample.php

<?php
/**
 * PHP cpulimit daemon
 *
 * PHP cpulimit daemon checks for http calls with REQUEST_URI and limites those processes.
 * This is related to https://github.com/opsengine/cpulimit/issues/40#issuecomment-73372492
 * and http://www.tronko.es/servers/cpulimit-howto/
 *
 * LICENSE: This source file is subject to version 3.01 of the PHP license
 * that is available through the world-wide-web at the following URI:
 * http://www.php.net/license/3_01.txt.  If you did not receive a copy of
 * the PHP License and are unable to obtain it through the web, please
 * send a note to [email protected] so we can mail you a copy immediately.
 *
 * @category   process control
 * @package    cpulimit-daemon-test
 * @author     erm3nda at google's mail
 * @copyright  1997-2005 The PHP Group
 * @license    http://www.php.net/license/3_0.txt  PHP License 3.0
 * @see        https://github.com/opsengine/cpulimit/issues/40
 * @requisites Download and compile https://github.com/opsengine/cpulimit
 * @requisites Download pre-compiled Linux 64bit binary here http://s000.tinyupload.com/?file_id=33300278775241323639
 */

set_time_limit(5); // we ensure to stop the process to 5 seconds, like the refresh.

exec("curl -L http://someurl/file.php?param=1 > /dev/null 2>$1 &"); // put a bench i.e. http://www.php-benchmark-script.com/

$process = shell_exec("ps auxwwfe | grep QUERY_STRING | grep -v grep"); // get all pids that matchs a QUERY_STRING (http request)
preg_match_all("/.*\n/", $process, $matches); // group by new lines
$matches['data'] = $matches[0]; // regroup values
unset($matches[0]); // free last array
foreach ($matches['data'] as $m) { // process all our results

    if (preg_match("/.*cpulimit.*/", $m) != true) { // skip the cpulimit processes
            $first_token  = strtok($m, ' '); // get the 1st word on a string
            $matches['pid'][] = strtok(' '); // get next word on a previous set string ($first_token)
    } else {
            $first_token  = strtok($m, ' '); // get the 1st word on a string
            $matches['skiped'][] = strtok(' ');
    }
}

foreach($matches['pid'] as $pid) { // limit those scripts by cpulimit
        $close = shell_exec("/sbin/cpulimit -l 10 -p" . $pid . " -v > /dev/null 2>&1 &");
        $matches['closed'][] = $pid;
    }

echo "<pre>";
var_dump($matches); // watch it out
echo "</pre>";
echo "<meta http-equiv='refresh' content='5'>"; // refresh the page