Functions exercises in PHP

functions-exercise.php

<?php

$cart = [
    ["product" => "paper", "quantity" => 7, "price" => 1.26],
    ["product" => "pen", "quantity" => 2, "price" => 0.12],
    ["product" => "eraser", "quantity" => 5, "price" => 0.89]
];

$stocks = [
    ["product" => "paper", "quantity" => 88],
    ["product" => "handcleaner", "quantity" => 0],
    ["product" => "pen", "quantity" => 34],
    ["product" => "papercliip", "quantity" => 11],
    ["product" => "eraser", "quantity" => 2],
    ["product" => "letter", "quantity" => 53]
];

phpinfo();