Overview
In this tutorial, we create 3 php files for testing our code.
1. main_login.php
2. checklogin.php
3. login_success.php
Steps
1. Create table "members" in database "test".
2. Create file main_login.php.
3. Create file checklogin.php.
4. Create file login_success.php.
5. Create file logout.php
STEP1: Create table "members"
For testing this code, we need to create database "test" and create table "members"
CREATE TABLE `members` (
`id` int(4) NOT NULL auto_increment,
`username` varchar(65) NOT NULL default '',
`password` varchar(65) NOT NULL default '',
PRIMARY KEY (`id`)
) TYPE=MyISAM AUTO_INCREMENT=2 ;
--
-- Dumping data for table `members`
--
INSERT INTO `members` VALUES (1, 'john', '1234');
STEP2: Create file main_login.php
The first file we need to create is "main_login.php" which is a login form
STEP3: Create file checklogin.php
We have a login form in step 2, when a user submit their username and password, PHP code in checklogin.php will check that this user exist in our database or not.
If user has the right username and password, then the code will register username and password in the session and redirect to "login_success.php". If username or password is wrong the system will show "Wrong Username or Password".
############### Code
STEP4: Create file login_success.php
User can't view this page if the session is not registered.
############### Code
// Check if session is not registered, redirect back to main page.
// Put this code in first line of web page.
Login Successful
STEP5: Create file Logout.php
If you want to logout, create this file. The code in this file will destroy the session.
// Put this code in first line of web page.
For PHP5 User - checklogin.php
############### Code
Encrypting Password - Make your Login More Secure