有一个很难的有关问题，php获取javascript的值来判断域名来路，后期不好处理

<a href="test1.php">跳转到test1</a>

<?php<br />session_start();<br />require "./test2.php";<br />class A{<br />	function __construct()<br />	{<br />		$b=new B();<br />		$b->judge();<br />	}<br />	function judge()<br />	{<br />		if($_SESSION['status']==1){<br />			return true;	<br />		}else{<br />			return false;	<br />		}<br />	}<br />	function run()<br />	{<br />		if($this->judge()){<br />			echo 'success';	<br />		}else{<br />			echo 'error';	<br />		}<br />	}<br />}<br />$a=new A();<br />$a->run();<br />?>

<?php<br />session_start();<br />class B{<br />	function judge()<br />	{<br />		echo '<script><br />		var xmlhttp;<br />		if (window.ActiveXObject){<br />		  xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");<br />		}else{<br />		  xmlhttp = new XMLHttpRequest();<br />		}<br />		xmlhttp.open("POST", "./test3.php", true);<br />		xmlhttp.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");<br />		xmlhttp.send("data="+document.referrer);<br />		console.log(document.referrer); //控制台观察<br />		xmlhttp.onreadystatechange = function(){<br />		  if (xmlhttp.readyState === 4 && xmlhttp.status === 200) {<br />		  }<br />		};</script>';<br />	}<br />}<br />?>

<?php<br />session_start();<br />if(stristr($_POST['data'], 'localhost')){<br />    			$_SESSION['status']=1;<br />    		}else{<br />    			$_SESSION['status']='';<br />    		}<br />?>