1. <?php
2.  
3. $arrays=array(
4.         ‘www.aa.com‘=>‘aa/index.html‘,
5.         ‘www.bb.com‘=>‘bb/index.html‘,
6.         ‘www.cc.com‘=>‘cc/index.html‘,
7.         ‘www.dd.com‘=>‘dd/index.html‘,
8.         ‘127.0.0.1‘=>‘bbs/index.php‘,
9. );
10. $url = $arrays[$_SERVER[‘HTTP_HOST‘]];
11. Header(“Location: $url“);
12. ?>