自动刷新回声 [英] Auto-refresh echo

问题描述

我有一个代码:

<span id="refresh"><?echo $users;?></span>

这里出现注册的用户总数，我想自动刷新它，例如，如果出现100，则当某人注册到我的网站时，我希望将此数字从100自动更新为101，而无需刷新页面.

Here appear total users registered and I want to auto refresh this, for example if appear 100, when somebody has registered to my site, I want to auto update this number from 100 to 101 without refreshing page.

推荐答案

仅在对页面进行预处理时，才将php变量渲染到屏幕上.您将不想使用回声，而是要使用AJAX来获取用户数.

A php varible is only rendered to the screen as the page is being preprocessed. Rather than have the echo there you'll want to use AJAX to fetch the user count.

$.ajax({
     type : 'GET',
     url : 'user_count.php',
     success : function(data){

          $('#refresh').html(data);
     },
});

以上示例使用的是jQuery的ajax方法.您可以在计时器中调用它，并在user_count.php中回显用户计数.然后，将使用从AJAX请求中收集的计数来设置刷新的内容.

The example above is using jQuery's ajax method. You could call this in a timer and echo out the user count in user_count.php. This would then set the contents of refresh with the count gathered from the AJAX request.

希望这对您有所帮助.

蒂姆

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