大橙子网站建设,新征程启航
为企业提供网站建设、域名注册、服务器等服务
这篇文章主要介绍了php中如何使用rand()函数,具有一定借鉴价值,感兴趣的朋友可以参考下,希望大家阅读完这篇文章之后大有收获,下面让小编带着大家一起了解一下。
创新互联专注于永靖网站建设服务及定制,我们拥有丰富的企业做网站经验。 热诚为您提供永靖营销型网站建设,永靖网站制作、永靖网页设计、永靖网站官网定制、微信小程序定制开发服务,打造永靖网络公司原创品牌,更为您提供永靖网站排名全网营销落地服务。
@session_start(); $currentTime = time(); $changeTime = 10; $rand = ''; if(isset($_SESSION['time'])) { if(($currentTime - $_SESSION['time']) >= $changeTime) { $_SESSION['time'] = $currentTime; $rand = (0, 9999); $_SESSION['rand'] = $rand; }else{ $rand = $_SESSION['rand']; } }else{ $_SESSION['time'] = $currentTime; $rand = (0, 9999); $_SESSION['rand'] = $rand; } = $changeTime) { switch ($_i){ case '0': $_SESSION['rand'][$_i] = mt_rand(100,200); $rand = $_SESSION['rand'][$_i]; break; case '1': $_SESSION['rand'][$_i] = mt_rand(200,300); $rand = $_SESSION['rand'][$_i]; break; case '2': $_SESSION['rand'][$_i] = mt_rand(300,400); $rand = $_SESSION['rand'][$_i]; break; } $_SESSION['time'][$_i] = $currentTime; }else{ switch ($_i){ case '0': $rand = $_SESSION['rand'][$_i]; break; case '1': $rand = $_SESSION['rand'][$_i]; break; case '2': $rand = $_SESSION['rand'][$_i]; break; } } }else{ if(!isset($_SESSION['time'])){ $_SESSION['time'] = array(); } switch ($_i){ case '0': $_SESSION['rand'][$_i] = mt_rand(100,200); $rand = $_SESSION['rand'][$_i]; break; case '1': $_SESSION['rand'][$_i] = mt_rand(200,300); $rand = $_SESSION['rand'][$_i]; break; case '2': $_SESSION['rand'][$_i] = mt_rand(300,400); $rand = $_SESSION['rand'][$_i]; break; } $_SESSION['time'][$_i] = $currentTime; } return $rand; } ?>| | |
感谢你能够认真阅读完这篇文章,希望小编分享的“php中如何使用rand()函数”这篇文章对大家有帮助,同时也希望大家多多支持创新互联,关注创新互联行业资讯频道,更多相关知识等着你来学习!