php - 如何在页面刷新时旋转两个字符串或函数？

Question

我有两个值，我想在页面刷新时回显其中一个并旋转它。

如果这两个值是 Hello 和 Hi。

你好>页面刷新>你好>页面刷新>你好>页面刷新>你好

我试过shuffle, rand，mt_rand但有时它只是保持相同的值而不是旋转到下一个。

谢谢。

Answer 1

<?php 
session_start();

if (!isset($_SESSION["count"])) $_SESSION["count"] = 0;
$_SESSION["hits"]++;

echo ($_SESSION["hits"]%2 == 1?"Hi":"Hello");

// or with functions

if ($_SESSION["hits"]%2 ==1){
    my_func_1();
} else {
    my_func_2();
}

它基本上是一个页面命中计数器，其逻辑取决于页面命中是偶数还是奇数。

Answer 2

To rotate the string, something random is definitively not what you are seeking.

First to have to decide the scope of the rotation. Based on the distributed page from the server ? (odd pages hays hi) or based on the user that si visiting you (so the rotation is always visible to you, ever if other users have also the rotation)

I guess you want based on user:

So you have to link the rotation to the user that visit you, that can be managed through a cookie or through a PHP session

set the cookie and based on the value, say hello or hi

// before sending headers
$say = isset($_COOKIE['say'])?$_COOKIE['say']:1;
setCookie('say', $say==1?2:1);

if ($say == 1)
  echo "hello";
else
  echo "hi";

You can do the same thing with a PHP session

That gives you an idea