<?php

$numbers = [1, 2, 3, 4, 5];

// Double each number
$doubledNumbers = array_map(function($number) {
    return $number * 2;
}, $numbers);

print_r($doubledNumbers);
// Output: Array ( [0] => 2 [1] => 4 [2] => 6 [3] => 8 [4] => 10 )

$names = ['alice', 'bob', 'charlie'];

// Capitalize each name
$capitalizedNames = array_map('ucfirst', $names);

print_r($capitalizedNames);
// Output: Array ( [0] => Alice [1] => Bob [2] => Charlie )

$products = [
    ['id' => 1, 'name' => 'Laptop', 'price' => 1200],
    ['id' => 2, 'name' => 'Mouse', 'price' => 25]
];

// Add a formatted price string to each product
$formattedProducts = array_map(function($product) {
    $product['formatted_price'] = '$' . number_format($product['price'], 2);
    return $product;
}, $products);

print_r($formattedProducts);
/* Output:
Array
(
    [0] => Array
        (
            [id] => 1
            [name] => Laptop
            [price] => 1200
            [formatted_price] => $1,200.00
        )

    [1] => Array
        (
            [id] => 2
            [name] => Mouse
            [price] => 25
            [formatted_price] => $25.00
        )

)
*/

?>