Question

我正在使用jquery倒计时器，但问题是每次页面刷新时计时器从值设置开始。我希望第一次得到时间并保存在PHP会话中并从第一次减去第二次更新会话等。在简单的Word中我想创建php倒计时器只使用php运行50

这是我的控制器代码

public function actionViewtimer($id) {
    $session = Yii::app()->session;
    $this->layout = 'countdownlayout';
    if (empty($session['countdowntime'])) {
        $orderTime = microtime(true); #when user first time enter timer start from 50 mins
        $session->add('countdowntime', array($orderTime));   //replace this line
    } else {
        $time_end = microtime(true);
        $orderTime = $time_end - $time_start;
        unset($session['countdowntime']);//unset old session
        $session->add('countdowntime', array($orderTime));   //when user enter second  
    }

    $getMinutes = $getMinutes_from_orderTime ; #please tell me how  we extact minutes and pass them to view

    $session->add('timersession', array($rand));   
    $this->render('viewtimerpage', array(
        'getMinutes' => $getMinutes
    ));
}

这是我的jquery代码

 <script>
 $(function() {
     $('#xlarge').countdowntimer({
          minutes: 50<?php echo $getMinutes; ?>,
          size: "lg",
          timeUp: timeisUp
     });
 });

 function timeisUp() {
     alert('Time Complete');
     return false;
 }
 </script>

Answer 1

抱歉，我没有使用Yii，所以这个例子将使用普通的PHP。

session_start();

if(!isset($_POST['counter']) || !is_array($_POST['counter')) {
    $duration = 50;
    $counter = array(
        'start_time' => new DateTime()->format('Y-m-d H:i:s'),
        'end_time' => new DateTime()->modify("+{$duration} minute")->format('Y-m-d H:i:s'),
        'duration' => $duration
    );

    $_SESSION['counter'] = $counter;
}
$counter = $_POST['counter'];

$now = new DateTime();
$end_time = new DateTime($counter['end_time']);
$time_left = $end_time->getTimestamp() - $now->getTimestamp();

echo "{$time_left} seconds left";

这应该足够简单转换，您可以轻松地将秒转换为分钟。

Answer 2

不要销毁会话变量。只需在第一次设置为空时将其设置为倒数计时器。

在你的行动中

$session = Yii::app()->session;
$this->layout = 'countdownlayout';
if (empty($session['countdowntime'])) {
    $date = new DateTime();
    $date->modify('+50 minutes'); // Add 50 minutes to current time
    $session['countdowntime'] = $date->format('Y/m/d H:i:s'); // Store date in session
} 
$this->render('viewtimerpage', array(
    'countdowntime' => $session['countdowntime'];
));

jQuery代码

$(function() {
    $('#xlarge').countdowntimer({
        dateAndTime : "<?php echo $countdowntime; ?>",
        size: "lg",
        timeUp: timeisUp
    });
});

Answer 3

据我了解，您希望显示两个日期之间的差异。默认值= 50分钟（如果用户第一次打开页面，会话值）。如果用户在视图中10分钟后刷新页面必须显示差异（40）。它会是这样的：

public function actionViewtimer($id) {
        $this->layout = 'countdownlayout';
        /** @var CHttpSession $session */
        $session = Yii::app()->session;
        $minutes = 50; //default value for minutes

        if (!$session->offsetExists('countdowntime')) {
            $session->add('countdowntime', new DateTime()); //set value to session
        } else {
            $timeEnd = new DateTime();
            /** @var DateTime $countDownTime */
            $countDownTime = $session->get('countdowntime');
            $interval = $countDownTime->diff($timeEnd);
            $countMinutes = $interval->days * 24 * 60;

            $countMinutes += $interval->h * 60;
            $countMinutes += $interval->i;
            $minutes -= $countMinutes;

            $session->add('countdowntime', $timeEnd);   //refresh value
        }

//        $session->add('timersession', array($rand)); don't know for what is it
        $this->render('viewtimerpage', array(
            'getMinutes' => $minutes
        ));
}

和js：

<script>
 $(function() {
     $('#xlarge').countdowntimer({
          minutes: <?php echo $getMinutes; ?>, //without 50

Php减去会话中保存的当前时间

3 个答案: