您好,登錄后才能下訂單哦!
這篇文章主要介紹了php中如何使用rand()函數,具有一定借鑒價值,感興趣的朋友可以參考下,希望大家閱讀完這篇文章之后大有收獲,下面讓小編帶著大家一起了解一下。
@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'] = $rand; } <?php session_start(); function _rand($_i){ $currentTime = time(); $changeTime = 10; $rand = ''; if(isset($_SESSION['time'][$_i])){ if(($currentTime - $_SESSION['time'][$_i]) >= $changeTime) { switch ($_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; } ?> <div > <i><?php echo _rand(0) ;?></i><b>|</b> <i><?php echo _rand(1) ;?></i><b>|</b> <i><?php echo _rand(2) ;?></i><b>|</b> </div>
感謝你能夠認真閱讀完這篇文章,希望小編分享的“php中如何使用rand()函數”這篇文章對大家有幫助,同時也希望大家多多支持億速云,關注億速云行業資訊頻道,更多相關知識等著你來學習!
免責聲明:本站發布的內容(圖片、視頻和文字)以原創、轉載和分享為主,文章觀點不代表本網站立場,如果涉及侵權請聯系站長郵箱:is@yisu.com進行舉報,并提供相關證據,一經查實,將立刻刪除涉嫌侵權內容。