What are some real-world scenarios where recursive array traversal is commonly used in PHP development?

Recursive array traversal is commonly used in PHP development when dealing with nested arrays or multidimensional arrays. This is often seen when working with JSON data or when parsing complex data structures. By using recursion, developers can easily iterate through each element of the array, regardless of its depth, to perform operations or extract specific information. 

function recursiveArrayTraversal($array) {
    foreach ($array as $key => $value) {
        if (is_array($value)) {
            recursiveArrayTraversal($value);
        } else {
            // Perform operations on the leaf node
            echo $key . ": " . $value . "\n";
        }
    }
}

// Example usage
$data = [
    'name' => 'John',
    'age' => 30,
    'address' => [
        'street' => '123 Main St',
        'city' => 'New York',
        'zip' => '10001'
    ]
];

recursiveArrayTraversal($data);

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