In PHP, how do I reduce arrays in vanilla PHP?

Reducing arrays in PHP can be done using different methods depending on what kind of reduction you want to achieve. Below is a simple example of using the `array_reduce` function to sum up all the values in an array.


        <?php
        $numbers = [1, 2, 3, 4, 5];
        
        // Using array_reduce to sum the numbers
        $sum = array_reduce($numbers, function($carry, $item) {
            return $carry + $item;
        });
        
        echo $sum; // Output: 15
        ?>