请教大神：为何我对一个url重定向后就无法更改重定向的地址了
源代码：
index.php
<?php //redirect the current request if necessary require_once 'include/url_redirect.inc.php'; //redirect requests to index.php and index.html to the root fix_index_url();?><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><title>SEO Egghead: SEO for Nerds</title></head><body><h1>Welcome to SEO Egghead!</h1></body></html>
function fix_index_url() { if(preg_match('#(.*)index\.(php|html)$#', $_SERVER['REQUEST_URI'], $captures)) { //perform a 301 redirect to the new URL header('HTTP/1.1 301 Moved Permanently'); header('Location:' . "http://localhost/seophp"); }// exit(); }