Under normal circumstances, users browse web pages at a speed of several seconds, ten seconds or even longer to refresh a page. However, sometimes web pages are maliciously refreshed quickly, resulting in slow browsing speed for normal users. , how to solve this problem? You can use the following code to limit the number of page visits per IP:
<?php
$min_seconds_between_refreshes = 3;#设置刷新的时间
session_start();
if(array_key_exists('last_access', $_SESSION) && time()-$min_seconds_between_refreshes <= $_SESSION['last_access'])
{
// The user has been here at least $min_seconds_between_refreshes seconds ago - block them
exit('You are refreshing too quickly, please wait a few seconds and try again.');
}
// Record now as their last access time
$_SESSION['last_access'] = time();
?>
以上代码在真实的用户环境下，是可以实现的
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