[PHP]代码

<?php  /**  * http://blog.qita.in  */  $ADMIN = array(      'defaulturl'=> 'http://blog.qita.in/images/banner-header.gif',  //盗链返回的地址      'url_1'     => 'http://blog.qita.in/file',      'url_2'     => 'http://blog.qita.in/file1',  );  $okaysites = array(    'http://qita.in',      'http://blog.qita.in',  //白名单      'http://blog.qita.in/1.html',  );  $reffer = $_SERVER['HTTP_REFERER'];  if ($reffer) {      $yes = 0;      while (list($domain, $subarray) = each($okaysites)) {          if (ereg($subarray, "$reffer")) {              $yes = 1;          }      }      $theu = 'url_' . $_GET['site'];    $file = $_GET['file'];      if ($ADMIN[$theu] and $yes == 1) {      header("Location: $ADMIN[$theu]/$file");      } else {          header("Location: $ADMIN[defaulturl]");      }  } else {      header("Location: $ADMIN[defaulturl]");  }  print_r($_SERVER['HTTP_REFERER']);  ?>