How can server-side tasks like database entry and email notification be handled simultaneously in PHP forms?

To handle server-side tasks like database entry and email notification simultaneously in PHP forms, you can use PHP's built-in functions for database operations and email sending. You can first insert the form data into the database using functions like mysqli_query(). Then, you can send an email notification using functions like mail(). By executing these tasks sequentially in your PHP script, you can ensure that both database entry and email notification are handled successfully.

// Database entry
$conn = mysqli_connect("localhost", "username", "password", "database");
$query = "INSERT INTO table_name (column1, column2) VALUES ('$value1', '$value2')";
mysqli_query($conn, $query);

// Email notification
$to = "recipient@example.com";
$subject = "New Form Submission";
$message = "A new form has been submitted.";
$headers = "From: sender@example.com";
mail($to, $subject, $message, $headers);