if (isSubmit($_POST)) { // Form has been submitted, process the input data $username = $_POST['username']; // rest of the code... }
$.ajax({ type: "POST", url: "process.php", data: { username: "John", password: "Doe" } })
if (isSubmit($_POST)) { // AJAX call has been made, process the input data $username = $_POST['username']; $password = $_POST['password']; // rest of the code... }Package library: The isSubmit function is not a part of any specific package or library. It is a simple utility function that can be included in any PHP script.