php - 如何同时显示数组键和值？

Question

我想为我的网站构建动态生成的营业时间列表以突出显示当天。

第一步，我想通过 PHP 生成 HTML 列表。不幸的是，这不起作用。我的代码:

<ul>
    <?php
        /* Sunday = 0 */
        $daynumber_of_week = date('w', strtotime('Sunday'));

        /* Define Opening Hours */
        $openingHours = array(
            "sunday" => array("Closed"),
            "monday" => array("Closed"),
            "tuesday" => array("8.30 am - 3.00 pm"),
            "wednesday" => array("8.30 am - 1.30 pm", "2.00 pm - 7.00 pm"),
            "thursday" => array("8.30 am - 0.30 pm", "2.00 pm - 7.00 pm"),
            "friday" => array("8.30 am - 0.30 pm", "1.00 pm - 6.00 pm"),
            "saturday" => array("8.30 am - 2.00 pm")
        );

        /* Create Opening Hours */
        for ($x = 0; $x < count($openingHours); $x++)
        {
            echo '<li class="list-unstyled-item d-flex">' . $openingHours[$x] . '<span class="ml-auto">' . $openingHours[$x][0] . '</span></li>';

            if (isset($openingHours[$x][1]))
            {
                echo '<li class="list-unstyled-item d-flex"><span class="ml-auto">' . $openingHours[$x][1] . '</span></li>';
            }
        }
    ?>
</ul>

我想在回显行中显示以下内容，但它什么也没显示:

$openingHours[$x] -> e.g. wednesday
$openingHours[$x][0] -> first Value of wednesday e.g. "8.30 am - 1.30 pm"
$openingHours[$x][1] -> second Value of wednesday e.g. "2.00 pm - 7.00 pm"

Answer 1

这被不必要地复杂化了。使用扩展 foreach .

$daynumber_of_week = date('w', strtotime('Sunday'));

/* Define Opening Hours */
$openingHours = array(
    "sunday" => array("Closed"),
    "monday" => array("Closed"),
    "tuesday" => array("8.30 am - 3.00 pm"),
    "wednesday" => array("8.30 am - 1.30 pm", "2.00 pm - 7.00 pm"),
    "thursday" => array("8.30 am - 0.30 pm", "2.00 pm - 7.00 pm"),
    "friday" => array("8.30 am - 0.30 pm", "1.00 pm - 6.00 pm"),
    "saturday" => array("8.30 am - 2.00 pm")
);

foreach ($openingHours as $key => $value) {
    echo '<li class="list-unstyled-item d-flex">' . $key . '<span class="ml-auto">' . $value[0] . '</span></li>';

    if (isset($value[1]))
    {
        echo '<li class="list-unstyled-item d-flex"><span class="ml-auto">' . $value[1] . '</span></li>';
    }
}

注意:在您不知道的情况下，您可以使用[] 来声明一个数组而不是array() 作为PHP 5.4。

实例

Repl

JSFiddle