0
的index.php刷新數據的時間間隔後重新倒計時
這是倒計時正在發生的事情我的主文件。這是一個簡單的倒計時腳本。下一個文件「Select.php」包含在倒計時完成後需要運行的代碼,還需要將倒計時刷新到當前時間+1小時。最好的事情是,如果這可能與ajax有關,但如果不是,那麼每工作一小時就會刷新頁面。
當我試圖相互實現這些代碼時遇到的一個問題是,每次刷新頁面時,都會從數據庫中選擇一個新行。我需要的是,只有在倒計時完成時,纔會選擇數據庫中的新行。
我已經嘗試使用cron作業,但我沒有設法讓它工作。:(
<script>
var CountDownTimer;
CountDownTimer = function(dt, id) {
var _day, _hour, _minute, _second, end, selector, showRemaining, timer;
selector = document.getElementById(id);
end = new Date(dt);
_second = 1000;
_minute = _second * 60;
_hour = _minute * 60;
_day = _hour * 24;
showRemaining = function() {
var days, distance, hours, minutes, now, seconds;
now = new Date();
distance = end - now;
if (distance <= 0) {
CountDownTimer("<?php echo $expire_date; ?> <?php echo $expire_time; ?>:00", "countdown");
return;
}
days = Math.floor(distance/_day);
hours = Math.floor((distance % _day)/_hour);
minutes = Math.floor((distance % _hour)/_minute);
seconds = Math.floor((distance % _minute)/_second);
return selector.innerHTML = minutes + " mins " + seconds + " secs";
};
return timer = setInterval(showRemaining, 1000);
};
CountDownTimer("<?php echo $expire_date; ?> <?php echo $expire_time; ?>:00", "countdown");
</script>
Select.php
下面是需要在主文件倒計時後運行的代碼完成。
<?php
$servername = "servername";
$username = "username";
$password = "password";
$dbname = "dbname";
// Create connection
$conn = new mysqli($servername, $username, $password, $dbname);
// Check connection
if ($conn->connect_error) {
die("Connection failed: " . $conn->connect_error);
}
$sql = "SELECT * FROM users ORDER BY RAND() LIMIT 1";
$result1 = $conn->query($sql);
if ($result1->num_rows > 0) {
while($row = $result1->fetch_assoc()) {
echo $row["username"];
}
}
?>