What are the advantages of using functions like array_map() in PHP for manipulating array values before processing them?

When working with arrays in PHP, sometimes we need to manipulate the values before processing them. Using functions like array_map() allows us to apply a callback function to each element in the array and return a new array with the modified values. This can help simplify our code and make it more readable by separating the manipulation logic from the processing logic.

// Example of using array_map() to manipulate array values before processing
$numbers = [1, 2, 3, 4, 5];

// Define a callback function to double each value
function doubleValue($value) {
    return $value * 2;
}

// Use array_map() to apply the callback function to each element in the array
$doubledNumbers = array_map('doubleValue', $numbers);

// Process the modified array
foreach ($doubledNumbers as $number) {
    echo $number . ' ';
}