PHP Login and logout script and exampleDepending on the visitors session condition whether logged in or not we can display different messages to the members.We should show an welcome messages to a logged in user like "Welcome john" with a logout button. Same way we if the member has not logged in then we can show login input box in that place or show the link to login page.
We can check the visitors session variable and display a login or logout link using one PHP IF condition. This is one example of php if and see detail Login script for full code. We will be using PHP isset function to check the existence of session variable.
Read more on PHP Session variables here
There are two types of pages here.
One is where based on user status ( login or not login) we will display welcome message with logout link and for other login link. For example the home page of the site where member is not yet logged in but can check the content of the page
Second one is for the pages where content can be accessed only by login members. So if the page is opened without login then we will not execute the content of the page and we will show the link to login page with a message. For example change password page or update profile page.
Using multiple pagesThere may be several pages where we will be restricting access to login members only. So to maintain access over multiple pages we will keep the code in a common file and include the file when ever required. This will help us in easy maintenance of site.
Let us see how we will add login status to pages.
Inside the check.php file we will keep this code.
PHP Session: Creating , using destroying Session variables PHP Session ID: generating session id and re-generating Online membership management script Posting Activation key for lost encrypted password to the email address Creating a signup page and storing member details in MySQL Storing signup data in a table Changing or updating password by the logged in member Forgot password feature in member signup script Basic login form Login script to authenticate user from a mysql table data Checking the status of user for login or logged out Updating member profile inside member area Adding Profile Photo by Members after login Finding out who are online