What alternative approaches could be considered for achieving the desired outcome in the PHP code?

Issue: The current PHP code is using a loop to iterate over an array and perform some operation on each element. However, this approach may not be the most efficient or concise way to achieve the desired outcome. Alternative approach: Instead of using a loop, we can use array_map() function to apply a callback function to each element of the array and return a new array with the modified elements.

// Original code using a loop
$numbers = [1, 2, 3, 4, 5];
foreach ($numbers as $key => $value) {
    $numbers[$key] = $value * 2;
}

// Alternative approach using array_map()
$numbers = [1, 2, 3, 4, 5];
$numbers = array_map(function($value) {
    return $value * 2;
}, $numbers);