gistfile1.php

<?php
	
	declare(ticks = 1);
	
	class HRServerMon_Poller
	{
		var $hostname;
		
		function HRServerMon_Poller($hostname)
		{
			if ($hostname == "host7.hrwebservices.net")
				sleep(5);
			else
				sleep(2);
				
			$this->hostname = $hostname;
			echo $this->hostname . "\n";
		}
	}
	
	$children = 0;
	$servers = file("servers");
	
	for ($i = 0; $i < 5; $i++) {
		$server = trim(array_pop($servers));
		$children++;
		
		$pid = pcntl_fork();
		if (!$pid) {
			echo "Child executed. There are $children running.\n";
			$poll = new HRServerMon_Poller($server);
			exit(0);
		}
	}
	
	while (1) {
		while (pcntl_waitpid(0, $status) != -1) {
			$children--;
			echo "Child exited. There are $children running.\n";
			
			if (count($servers)) {
				$server = trim(array_pop($servers));
				$children++;
			
				$pid = pcntl_fork();
				if (!$pid) {
					echo "Child executed. There are $children running.\n";
					$poll = new HRServerMon_Poller($server);
					exit(0);
				}
			}
		}
	}

?>