php程序网站整站实现301跳转的方法
先看跳转代码
$dest_host=”www.99downs.com”; //申明一个变量$dest_host存放要跳转的网址
$url = $_SERVER['REQUEST_URI']; //申明一个变量$url存放获取当前网站的主机地址及网站url
$http = (isset($_SERVER['HTTPS'])&&$_SERVER['HTTPS']!=’off’)?’https://’:'http://’; //申明变量$http存放协议
//$port = $_SERVER['SERVER_PORT']==’80′?”:’:'$_SERVER['SERVER_PORT']; //网站端口
$url = $http.$dest_host.$url; //合并地址
switch ($_SERVER['HTTP_HOST']){
case “www.007kj.cn”: // 如果获取的host是www.007kj.cn
header(‘HTTP/1.1 301 Moved Permanently’); //载入301
header(“location:”.$url);
break;
case “007kj.cn”: // 或者是007kj.cn
header(‘HTTP/1.1 301 Moved Permanently’); //载入301
header(“location:”.$url);
break;
}
?>
在代码中,网站的端口暂时没有采用,一般都采用80端口的,就先省略掉了,如果有的网站的页面还有不同端口的页面,则需要将port那部分代码调试一下再使用。
如果是其它的php网站的整站301跳转,则需要新建一个php页面,例如301.php,将以上跳转的代码复制进去,放在global里面全局调用一下,就可以了。当然,如果网站的php文件都有类似top的共同页面,也可以将301跳转的语句写在这里。
总结一下,总体的原理就是:将需要跳转的域名,替换成指定的域名,然后将后面的路径及参数都重新组装,保证页面本来路径的正确性。
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