php中如何使用rand()函数-创新互联
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。
@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!
另外有需要云服务器可以了解下创新互联cdcxhl.cn，海内外云服务器15元起步，三天无理由+7*72小时售后在线，公司持有idc许可证，提供“云服务器、裸金属服务器、高防服务器、香港服务器、美国服务器、虚拟主机、免备案服务器”等云主机租用服务以及企业上云的综合解决方案，具有“安全稳定、简单易用、服务可用性高、性价比高”等特点与优势，专为企业上云打造定制，能够满足用户丰富、多元化的应用场景需求。
文章标题：php中如何使用rand()函数-创新互联
文章路径：http://scyanting.com/article/phdcc.html
