php实现TCP端口检测的方法

本文实例讲述了php实现TCP端口检测的方法。分享给大家供大家参考。具体如下：

该程序可以确认当前端口是否可用：

    <?php
    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();

希望本文所述对大家的php程序设计有所帮助。