PHP/MySQL : how do I display records sorted by time and grouped by date?

Question

我需要显示按日期分组并按时间排序的记录。在 mysql 表中，我有一个名为 entry_time 的字段，其中存储了 php time() 值。有什么想法是最紧凑和最简单的方法吗？

例如:我需要这样的显示:

21st April
3:00 pm
3:50 pm

22 April
5:00 am
4:00 pm

Answer 1

粗略的半伪代码:

$records = /* SELECT * FROM `records` ORDER BY `entry_time` */;

$date = null;
foreach ($records as $record) {
    $currentDate = date('Ymd', $record['entry_time']);
    if ($currentDate != $date) {
        printf('<h1>%s</h1>', date('Y-m-d', $record['entry_time']));
    }
    $date = $currentDate;

    echo date('H:i', $record['entry_time']);
}