php $_SERVER['HTTP_REFERER']详解
ceshia.php
<pre>
echo '<a href="ceshib.php">ceshib</a>';
</pre>
ceshib.php
<pre>
print_r($_SERVER['HTTP_REFERER']);
exit();
</pre>
访问ceshia 然后点击ceshib连接
返回http://wx.newmiracle.cn/ceshia.php
如果直接访问ceshib
就会报错
Notice: Undefined index: HTTP_REFERER in F:\phpStudy\WWW\mircoweb\mircoweb\wwwroot\Public\ceshib.php on line 8