How Can I Retrieve The First Level Keys Of A 2d Array Using A Foreach Loop In PHP?

To access the first level keys of a 2D array using a foreach loop in PHP, you can iterate over the array’s keys using the array_keys() function within the foreach loop. Here’s an example:

$array = [
    'key1' => [
    'key2' => [

foreach (array_keys($array) as $key) {
    echo $key . "\n"; // Output: key1, key2

In this example, the array_keys() function returns an array containing the keys of the $array variable, which are then iterated with the foreach loop. Inside the loop, you can access each first-level key by using the $key variable.

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