process.php

<?php
/* An easy way to keep in track of external processes.
 * Ever wanted to execute a process in php, but you still wanted to have somewhat controll of the process ? Well.. This is a way of doing it.
 * @compability: Linux only. (Windows does not work).
 */
class Process{
	private $pid;
	private $command;

	public function __construct($cl=false){
		if ($cl != false){
			$this->command = $cl;
			$this->runCom();
		}
	}
	
	private function runCom(){
		$command = $this->command . '& echo $!';
		exec($command ,$op);
		$this->pid = (int)$op[0];
	}
	
	public function setPid($pid){
		$this->pid = $pid;
	}
	
	public function getPid(){
		return $this->pid;
	}
	
	public function status(){
		$command = 'ps -p '.$this->pid;
		exec($command,$op);
		if (!isset($op[1]))
			return false;
		else 
			return true;
	}

	public function start(){
		if ($this->command != '')
			$this->runCom();
		else 
			return true;
	}
	
	public function stop(){
		
		$command = 'kill '.$this->pid;
		exec($command);
		if ($this->status() == false)
			return true;
		else 
			return false;
	}
}

?>