How to Access First Level Keys of a 2D Array using Foreach Loop?

Accessing First Level Keys of a 2D Array Using a Foreach Loop

When working with a two-dimensional array, you may want to access the first level keys in a loop. To achieve this, you can utilize the following approach:

Consider the following $places array:

<code class="php">[Philadelphia] => Array
        (
            [0] => Array
                (
                    [place_name] => XYX
                    [place_id] => 103200
                    [place_status] => 0
                )

            [1] => Array
                (
                [place_name] => YYYY
                [place_id] => 232323
                [place_status] => 0
            )
        )</code>

In the provided view code, you have a foreach loop that loops over the array's second level keys. To access the first level keys (e.g., "Philadelphia"), you can modify the loop as follows:

<code class="php"><?php foreach ($places as $key => $site): ?>
    <h5><?= $key ?></h5>
    <?php foreach ($site as $place): ?>
        <h6><?= $place['place_name'] ?></h6>
    <?php endforeach ?>
<?php endforeach ?></code>

By using $key => $site in the outer loop, you can access the first level keys as $key and iterate through the second level keys as $site. This modification will allow you to retrieve the "Philadelphia" key in your example.

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