这篇文章主要介绍了php实现TCP端口检测的方法,实例分析了php操作tcp端口检测的技巧,该程序可以确认当前端口是否可用。需要的朋友可以参考下：

<?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, $port);
	_set_block($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();
?>