按顺序打印数组的每个项目-每页刷新一个

问题描述

就像随机图像生成器一样(例如: http://www. (仅按顺序排列).我正在运行横幅广告，客户希望它们在每次页面加载时依次运行1、2、3、4、5.所以他们只是轮流走.加载5页，然后重新开始循环.

Like a random image generator (ex: http://www.dustindiaz.com/a-simple-php-image-rotator/), only in a sequential order. Im running banner ads, and the client would like them run 1,2,3,4,5 in order per page load. So they just go round robin. 5 page loads, then the cycle start again.

有什么想法吗?我已经搜索了一段时间，但没有找到任何东西.

Any ideas? I've googled for a while, and i'm not finding anything.

任何帮助都会很棒，非常感谢！

any help would be great, thanks much!

推荐答案

<?php

// start session
session_start();
$ads = array ('Ad1', 'Ad2', 'Ad3', 'Ad4', 'Ad5');

// rotate
$id = ++$_SESSION['ad_id'] % count($ads);
$_SESSION['ad_id'] = $id;

// display ad
echo $ads[$id];

当然，您需要实际的HTML代码，而不是Ad1，Ad2等.

Of course you'd need the actual HTML code instead of Ad1, Ad2, etc.

如果您不希望注意到，可以在session_start()

If you don't want notices the following piece of code can be added after session_start()

if (!isset($_SESSION['ad_id'])) $_SESSION['ad_id'] = 0;

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