php实现服务器端口扫描检测的方法

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=&#39;192.168.2.10&#39;;
$port=80;
$health = new Health();
$health->check($ip, $port);
$health->status();