php 批量301重定向www代码
<?php
$httphost=($_SERVER['HTTP_HOST']);
$httpswww=strpos($httphost,"www");
$request_uri = isset($_SERVER['REQUEST_URI']) ? $_SERVER['REQUEST_URI'] : '';
echo '1';
if($httpswww===0){
echo 'NO 301';
}else{
header('HTTP/1.1 301 Moved Permanently');//发出301头部
header('Location: http://www.'.$httphost.$request_uri);
}
