How can PHP variables be assigned values based on user input from a login form?

To assign PHP variables values based on user input from a login form, you can use the $_POST superglobal array to retrieve the input values submitted by the user. You can then assign these values to PHP variables for further processing or validation.

// Retrieve user input from login form
$username = $_POST['username'];
$password = $_POST['password'];

// Use the retrieved values as needed
// For example, you can check if the username and password match a database record