How can PHP developers optimize their code when using multiple nested foreach loops to iterate over arrays in PHP?

When using multiple nested foreach loops to iterate over arrays in PHP, developers can optimize their code by minimizing the number of nested loops and using array functions like array_map or array_walk to perform operations on arrays more efficiently.

// Example of optimizing code with nested foreach loops using array_map
$array = [1, 2, 3, 4, 5];
$modifiedArray = array_map(function($item) {
    return $item * 2;
}, $array);

print_r($modifiedArray);