转到随机页面 PHP [英] Going to a Random page PHP

问题描述

我有一个指向 http://example.com/random.php 的链接，下面是 random.php 的代码.

I have a link that goes to http://example.com/random.php, code for random.php below.

<?php
srand ((double) microtime( )*1000000);
$random_number = rand(1,100);
header( "Location: http://example.com/test?page=$random_number" ) ;
?>

基本上我想要它做的是链接到一个随机页面.它最初有效，但在第一次点击后，它每次都会链接回同一个假定的随机页面.知道如何解决这个问题吗?或者可能是完全解决问题的更好方法?

Basically what I want it to do is link to a random page. It works initially, but after the first click it keeps linking back to the same supposedly random page every single time. Any idea how to fix this? or maybe a better way to approach the problem entirely?

推荐答案

我猜 Web 浏览器会缓存 Location 重定向.尝试在页面顶部添加一些缓存破坏"标题

My guess would the web browser is caching the Location redirect. Try adding some "cache busting" headers to the top of the page

<?php
    //from http://php.net/header
    header("Cache-Control: no-cache, must-revalidate"); // HTTP/1.1
    header("Expires: Sat, 26 Jul 1997 05:00:00 GMT"); // Date in the past

    srand ((double) microtime( )*1000000);
    $random_number = rand(1,100);
    header( "Location: http://example.com/test?page=$random_number" ) ;
?>

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