Are there any best practices for optimizing PHP code when working with arrays?

When working with arrays in PHP, one best practice for optimizing code is to use built-in array functions instead of manually iterating over arrays. These functions are optimized for performance and can often achieve the desired result more efficiently. Additionally, avoiding unnecessary array manipulation and keeping array operations to a minimum can also help improve code performance.

// Example of optimizing PHP code when working with arrays
// Using array_map() to apply a function to each element of an array

// Original code
$numbers = [1, 2, 3, 4, 5];
$multiplied_numbers = [];

foreach ($numbers as $number) {
    $multiplied_numbers[] = $number * 2;
}

// Optimized code using array_map()
$numbers = [1, 2, 3, 4, 5];
$multiplied_numbers = array_map(function($number) {
    return $number * 2;
}, $numbers);