Are there any best practices to follow when working with arrays in PHP?

When working with arrays in PHP, it is important to follow best practices to ensure efficient and effective code. One common best practice is to use built-in array functions instead of manually iterating through arrays. This can help improve code readability and performance. Additionally, it is recommended to properly validate and sanitize input data before using it in arrays to prevent security vulnerabilities.

// Example of using built-in array functions and validating input data
$input_data = $_POST['input']; // Assuming input is coming from a form

// Validate and sanitize input data
$validated_input = filter_var($input_data, FILTER_SANITIZE_STRING);

// Use array functions to manipulate the array
$numbers = [1, 2, 3, 4, 5];
$sum = array_sum($numbers);

echo "The sum of the numbers is: " . $sum;