PHP Session Example

The previous post was about PHP Session There explained about session its purpose and syntax in detail. Let’s see one good example of the session.

User login system
1. connection.php
This page is used to establish a database connection from the application.

2. index.php
This page retrieves the user detail from the database

query($sql);
		$num = $res->num_rows;
		if($num!=0)
		{
			$row = $res->fetch_array();
            			$_SESSION[userid] = $row[id];
			$_SESSION[chk]    = true;
            			header("location:profile.php");  //redirect one PHP file to another PHP file
		}
		else
		{
			echo "Login Fail";
		}

	}
?>;

 




Email-



Password








New User
 

3.

query($sql);
		header("location:index.php");
	}
?>

 




Name-



Address-



Phone-



Email-



Password








Already Register
 

4. checking.php
Check whether the user is in session or not

5. profile.php
This page displays the user information on the page

To select this select * from user query is used and we passed session userid that is extracted from $_SESSION[]

query($sql);
		$row = $res->fetch_array();
		echo "

$row[name]

$row[address]

$row[phone]

$row[email]

";
		
		echo "
		      Change Password";
	
?>

6. header.php
This page starts the session and shows a link login or logout based on user session was created or not

Login'; } 
        else{ echo 'Logout'; } ?>
  Profile

7.logout.php
This page is used to destroy the session

8. change.php
This page is used to change the user’s password

query($sql);
		$num = $res->num_rows;
		if($num!=0)
		{
			if($_POST[np]==$_POST[cp])
			{
				$sql1 = "update user set password = '$_POST[np]' where id='$_SESSION[userid]'";
				$con->query($sql1);
				header("location:logout.php");
			}
			else
			{
				echo "Password Does not Matched";
			}
		}
		else
		{
			echo "Current Password Wrong";
		}
	}
?>

 




Current Password-



New Password-



Confirm Password-








Profile