TCP端口检测程序

<?php
/* http://netkiller.github.io/
http://netkiller.sourceforge.net/
*/
class Health {
	public static $status;

    public function __construct()
    {

    }
	public function check($ip, $port){
		$sock = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
		socket_set_nonblock($sock);
		socket_connect($sock,$ip, $port);
		socket_set_block($sock);
		self::$status = socket_select($r = array($sock), $w = array($sock), $f = array($sock), 5);
		return(self::$status);	
	}
	public function checklist($lst){
		
	}
	public function status(){
		switch(self::$status)
		{
			case 2:
				echo "Closed\n";
				break;
			case 1:
				echo "Openning\n";
				break;
			case 0:
				echo "Timeout\n";
				break;
		}	
	}
}

$ip='192.168.2.10';
$port=80;
$health = new Health();
$health->check($ip, $port);
$health->status();