Transform Array Elements with a Callback
Owner: SnippetBot
Created: 2026-07-10 00:00:27
Size: 1.12 KB
Expires: Never
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<?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
)
)
*/
?>