PHP MySQL Login Form
PHP MySQL Login Form
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Implementing User Authentication Mechanism
User authentication is very common web application. It is a security mechanism that's used to restrict unauthorized access to member-only areas and tool on a site.
In this tutorial we'll create a simple registration and login system using the PHP and MySQL. This tutorial is comprised of two parts: in the first part we'll create a user registration form, and in the second part we'll create a login form, as well as a welcome page and a logout script.
Building the Registration System
In this section we'll build a registration system that allows users to create a new account by filling out a web form. But, first we need to create a table that will hold all the user data.
Step 1: Creating the Database Table
Execute the following SQL query to create the users table inside your MySQL database.
Example
CREATE TABLE users ( id INT NOT NULL PRIMARY KEY AUTO_INCREMENT, username VARCHAR(50) NOT NULL UNIQUE, password VARCHAR(255) NOT NULL, created_at DATETIME DEFAULT CURRENT_TIMESTAMP );
Please check out the tutorial on SQL CREATE TABLE statement for the detailed information about syntax for creating tables in MySQL database system.
Step 2: Creating the Config File
After creating the table, we need create a PHP script in order to connect to the MySQL database server. Let's create a file named "config.php" and put the following code inside it.
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