php - 按年、月对事件进行分组，然后列出每个事件 - PHP 和 MySQL

Question

我有一个 MySQL 表，其中包含我试图像这样显示的事件列表(不精确的格式):

2011

一月

• 一月事件 1
• 一月事件 2
• 一月事件 3

2012

三月

• 三月事件 1
• 三月事件 2

我终于能够使用下面的 PHP 来完成此任务，但我知道必须有更好的方法。正如您将看到的，有两个嵌套的 foreach 语句。 dateStart 列是一个DATE。

$fetchEvents = $contentDB->query("SELECT id, title, description, dateStart, dateEnd, timeStart, timeEnd, 
YEAR(dateStart) AS year, MONTH(dateStart) AS month, MONTHNAME(dateStart) AS monthName
 FROM events_general ORDER BY dateStart");
while ($event = $fetchEvents->fetch())
{
    $title = $event['title'];
    $description = $event['description'];
    $dateStart = $event['dateStart'];
    $month = $event['monthName'];
    $year = $event['year'];
    $events[$year][$month][] = array(
        'title' => $title,
        'description' => $description,
        'dateStart' => $dateStart);
}
foreach ($events as $year => $month)
{
    echo "<p><strong>$year</strong>\n";
    foreach ($month as $monthListing => $eventListing)
    {
        echo "
        <p>$monthListing</p>\n
        <div class=\"accordion\">\n
        ";
        foreach ($eventListing as $event)
        {
            $title = $event['title'];
            $description = $event['description'];
            $dateStart = $event['dateStart'];
            echo "
            <h3><a href=\"#\">$title - $dateStart</a></h3>\n
            <div>\n
            $description \n
            </div>\n
            ";
        }
        echo "</div>\n";
    }
}

Answer 1

这将在一次迭代中完成，但您需要摆弄结束语 </div> 的位置。对于 Accordion -

$fetchEvents = $contentDB->query("SELECT id, title, description, dateStart, dateEnd, timeStart, timeEnd, 
YEAR(dateStart) AS year, MONTH(dateStart) AS month, MONTHNAME(dateStart) AS monthName
 FROM events_general ORDER BY dateStart");

$prevYear = '';
$prevMonth = '';

while ($event = $fetchEvents->fetch())
{
    $title = $event['title'];
    $description = $event['description'];
    $dateStart = $event['dateStart'];
    $month = $event['monthName'];
    $year = $event['year'];

    if ($year <> $prevYear) {
        // if a new year we definitely need to close the previous accordion div
        // unless it's the first iteration
        if ($prevMonth) {
            echo '</div><!-- close accordion div -->';
        }
        echo "<p><strong>$year</strong>\n";
    }
    if ($year <> $prevYear || $month <> $prevMonth) {
        // if new month but not new year close accordion
        if ($year == $prevYear) {
            echo '</div><!-- close accordion div -->';
        }
        echo "<p>$monthListing</p>\n";
        echo "<div class=\"accordion\">\n";
    }

    echo "<h3><a href=\"#\">$title - $dateStart</a></h3>\n<div>\n$description \n</div>\n";

    $prevYear = $year;
    $prevMonth = $month;
}
// add final closing div here
echo '</div><!-- close accordion div -->';