test/data/if_modified_since.php

   1 <?php
   2 error_reporting(0);
   3
   4 $ts = $_REQUEST['ts'];
   5
   6 $ifModifiedSince = isset($_SERVER['HTTP_IF_MODIFIED_SINCE']) ? stripslashes($_SERVER['HTTP_IF_MODIFIED_SINCE']) : false;
   7 if ($ifModifiedSince == $ts) {
   8     header('HTTP/1.0 304 Not Modified');
   9     die; // stop processing
  10 }
  11
  12 header("Last-Modified: " . $ts);
  13
  14 if ( $ifModifiedSince ) {
  15         echo "OK: " . $ts;
  16 } else {
  17         echo "FAIL";
  18 }
  19
  20 ?>