请高手帮忙，微信连接网站的问题

[xxdsjq2005]

<?php
define ( 'IN_ECS', true );
require ('callback.php');
$wechatObj = new Callbackapi ();
$wechatObj->valid ( );
echo 'ok';
 
 
?>

下面这一段代码放在callback.php文件中

<?php
class Callbackapi
{
    public function valid()
    {
        $echoStr = $_GET ["echostr"];
        if ($this->checkSignature (  )) {
            echo $echoStr;
        }
    }
    public function checkSignature() 
    {
        $signature = $_GET ["signature"];
        $timestamp = $_GET ["timestamp"];
        $nonce = $_GET ["nonce"];   
        $token = 'qywjr';
        $tmpArr = array (
                $token,
                $timestamp,
                $nonce 
        );
      
        sort ( $tmpArr, SORT_STRING );
        $tmpStr = implode ( $tmpArr );
        $tmpStr = sha1 ( $tmpStr );//哈西加密算法   
        if ($tmpStr == $signature) {
            return true;
        } else {
            return false;
        }
    }
 
}
?>

当分开两个文件用微信连接网站的时候就会出现"TOKEN验证失败"。

还是这些代码，将代码放到一个文件的时候，就可以成功的连接了。这是什么原因呢。请高手们帮忙。
下面这段代码可以在微信上正常连接网站。

<?php
define ( 'IN_ECS', true );
require ('callback.php');
$wechatObj = new Callbackapi ();
$wechatObj->valid ( );
echo 'ok';
 
class Callbackapi
{
    public function valid()
    {
        $echoStr = $_GET ["echostr"];
        if ($this->checkSignature (  )) {
            echo $echoStr;
        }
    }
    public function checkSignature() 
    {
        $signature = $_GET ["signature"];
        $timestamp = $_GET ["timestamp"];
        $nonce = $_GET ["nonce"];   
        $token = 'qywjr';
        $tmpArr = array (
                $token,
                $timestamp,
                $nonce 
        );
      
        sort ( $tmpArr, SORT_STRING );
        $tmpStr = implode ( $tmpArr );
        $tmpStr = sha1 ( $tmpStr );//哈西加密算法   
        if ($tmpStr == $signature) {
            return true;
        } else {
            return false;
        }
    }
 
}
?>

[菜大师]

加ok能好使吗？应该微信知道你url，url设的那个，那个输出

[xxdsjq2005]

亲们，问题找到了，是编码原因，还请引以为戒