How to implement PHP password hashing on a login page?

edit

To implement PHP password Hashing on a login page, follow these steps:

1. Generate a hashed password The first step is to generate a hashed password to store in the user database. You can use the password_hash() function to hash the password. For example:

$password = passwordhash($inputPassword, PASSWORDDEFAULT);

1. Retrieve username and password from login form When the user submits the login form, retrieve the entered username and password from the form through the POST method.

2. Verify the entered password To verify the entered password, retrieve the hashed password associated with the entered username from the user database. Use the password_verify() function to verify the entered password against the hashed password retrieved from the database.

For example:

$user = getUser($username); // retrieve user information from database if ($user && passwordverify($inputPassword, $user['password'])) { // Login successful: set session variable and redirect to dashboard $SESSION['username'] = $username; header('Location: dashboard.php'); exit; } else { // Login failed: display error message $errorMessage = 'Invalid username or password'; }

1. Session handling If the verification process is successful, you can initialize a session for the user and redirect to the dashboard or any other authorized page. It's recommended to store only the username or user ID in the session, rather than sensitive information like the password.

That's it! You have now implemented PHP password hashing on a login page.