In PHP, how do I map arrays in a high-traffic application?

In high-traffic applications, efficiently mapping arrays is crucial for performance. PHP provides various functions to handle arrays effectively. Here’s a guide on mapping arrays in PHP:

Example of using the `array_map` function:


        <?php
        $numbers = [1, 2, 3, 4, 5];
        $squared = array_map(function($n) {
            return $n * $n;
        }, $numbers);
        print_r($squared);
        ?>