$cmd='';
		if (strtoupper(substr(PHP_OS, 0, 3)) === 'WIN') {//'This is a server using Windows!';
			$cmd=  $php_path.'\php.exe '.$path.'\long_process.php' ;	
		}else{
			$cmd='/usr/bin/php -f  /var/www/example.com/public/long_process.php';
		}
                    	$pid=run_process($cmd);
                    if(is_process_running($pid)){
			echo 'Process running';
                   		stop_process($pid);
		}else{
			echo 'Process not running';
		}