date_diff php的问题，将nowtime / nowdate与SQL保存的日期时间进行比较

    $today = date('Y-m-d H:i:s'); // get date SQL format
    $today = date('Y-m-d H:i:s', strtotime($today)); // get date SQL format¨

    $today = new DateTime($today);
    $compare = new DateTime($row['date']);

    $interval = date_diff($today, $compare);

    echo $interval->format("%H") .'<br>';
    echo $interval->format("%i") .'<br>';
    echo $interval->format("%s") .'<br>';
    die();
    $today = date('Y-m-d H:i:s'); // get date S