How can arrays be utilized to streamline the process of handling form data in PHP?

When handling form data in PHP, arrays can be utilized to streamline the process by organizing related form fields into a single data structure. This makes it easier to loop through and process the data, especially when dealing with multiple fields of the same type (e.g., multiple checkboxes or select options). By using arrays, you can simplify the code and make it more efficient when working with form submissions.

// Example of handling form data using arrays in PHP
if ($_SERVER["REQUEST_METHOD"] == "POST") {
    $name = $_POST["name"];
    $email = $_POST["email"];
    
    // Handling multiple checkboxes using arrays
    $interests = isset($_POST["interests"]) ? $_POST["interests"] : [];
    
    // Handling select options using arrays
    $gender = $_POST["gender"];
    
    // Processing the form data
    foreach ($interests as $interest) {
        echo "Interest: " . $interest . "<br>";
    }
    
    echo "Name: " . $name . "<br>";
    echo "Email: " . $email . "<br>";
    echo "Gender: " . $gender . "<br>";
}