Question

我在回答一个多维数组时遇到了一些困难。

这是数组转储：

$_SESSION['cart']: Array
(
    [SW] => Array
        (
            [mID] => SW
            [mday] => Mon
            [mtime] => 9:00pm
            [seat] => Array
                (
                    [sa] => 8
                    [sp] => 5
                    [sc] => 2
                    [b2] => 3
                )

            [price] => $200.00
        )
)

这是我的回声循环：

<?php foreach ($_SESSION['cart'] as $booking) { ?>
    <section>
        <?php foreach ($booking as $key => $value) { ?>
            <ul>
                <li>
                    <label><?php echo $key ?>:</label>
                    <span><?php echo $value?></span>
                </li>
            </ul>
         <?php } ?>
    </section>
<?php } ?>

当循环到达[座位]时，我一直遇到错误。

如何让它循环嵌套数组？

感谢您的帮助！

Answer 1

试试这个：

<?php foreach ($_SESSION['cart'] as $booking) { ?>
    <section>
        <?php foreach ($booking as $bookingValue) { ?>
            <ul>
                <li>

                <?php if(is_array($bookingValue)) {
                    foreach ($bookingValue as $key => $value) { ?>
                        <label><?php echo $key ?>:</label>
                        <span><?php echo $value?></span>
                    <?php }
                } else { ?>
                    <label><?php echo $key ?>:</label>
                    <span><?php echo $value?></span>
                <?php } ?>

                </li>
            </ul>
         <?php } ?>
    </section>
<?php } ?>

Answer 2

这是一个回显数组中每个项目的函数，即使它包含其他数组。您需要检查$value是否为数组。

function echoArrayValues($array) {
foreach ($array as $key => $value) {
    if(is_array($value)) {
       echoArrayValues($value);
       continue; 
    }
    echo $value.'<br>';
}
}

Answer 3

您无法回显数组。 echo需要一个字符串。

如果值是数组，则再次循环。

<?php foreach ($_SESSION['cart'] as $booking) { ?>
    <section>
        <?php foreach ($booking as $key => $value) { ?>
            <ul>
                <li>
                    <?php if(is_array($value)) {
                        foreach($value as $k=>$v){
                             echo $k." > ".$v."<br/>";
                        }
                    } else { ?>
                        <label><?php echo $key ?>:</label>
                        <span><?php echo $value?></span>
                    <?php } ?>
                </li>
            </ul>
         <?php } ?>
    </section>
<?php } ?>

Answer 4

试试这个：

<?php foreach ($_SESSION['cart'] as $booking) { ?>
        <section>
            <?php foreach ($booking as $key => $value) { ?>
                <ul>
                    <li>
                        <?php if( $key == 'seat' ) { 
                         foreach($value as $seat_key => $seat_value) { 

                         }
                         } else { ?>
                        <label><?php echo $key ?>:</label>
                        <span><?php echo $value?></span>
                        }?>
                    </li>
                </ul>
             <?php } ?>
        </section>
    <?php } ?>

Answer 5

array_walk_recursive($_SESSION['cart'], function($value, $key) { echo $key . ' ' . $value . PHP_EOL; })

输出：

mID SW
mday Mon
mtime 9:00pm
sa 8
sp 5
sc 2
b2 3
price $200.00

Answer 6

像这样的东西

<?php foreach ($_SESSION['cart'] as $booking) { ?>
<section>
    <?php foreach ($booking as $key => $value) { ?>
         <ul>
            <li>
                <?php if(is_array($value)) {
                    foreach($value as $k=>$v){
                         echo $k." : ".$v."<br/>";
                    }
                } else { ?>
                    <label><?php echo $key ?>:</label>
                    <span><?php echo $value?></span>
                <?php } ?>
            </li>
        </ul>
     <?php } ?>
</section>

<强>输出

mID: SW
mday: Mon
mtime: 9:00pm
sa : 8
sp : 5
sc : 2
b2 : 3
price: $200.00

Foreach循环和多阵列回声

6 个答案: