比较日期，并在PHP中显示剩余的截止日期

$currentDate = date('Y-m-d');
$deadline = '2022-12-31';

$currentTimestamp = strtotime($currentDate);
$deadlineTimestamp = strtotime($deadline);

$remainingSeconds = $deadlineTimestamp - $currentTimestamp;

$remainingDays = floor($remainingSeconds / (60 * 60 * 24));
$remainingHours = floor(($remainingSeconds % (60 * 60 * 24)) / (60 * 60));
$remainingMinutes = floor(($remainingSeconds % (60 * 60)) / 60);

echo "距离截止日期还剩余：{$remainingDays}天 {$remainingHours}小时 {$remainingMinutes}分钟";