How to Start and End Session

How to Start and End Session

Dear friend,

• Session holds the session variable information and it is very easy to create session in PHP.
• Before you create a session variable in PHP you need to start the session which is accomplished by below function.
  • Session_start();
  • You have to use this function before you create session variables.
  • Now you can create session variable and assign value to session variable as below.
  • $_SESSION[‘variable name’]=value;
  • You can retrieve and print session variable value as below.
  • $_echo “session variable value”.$_SESSION[‘variable name’];
  • Use can check variable value is set or not using isset as below.
  • If isset($_SESSION[‘variable name’]){}
  • If you want unset the session variable or free the session variable unset method is used as below.
  • Unset($_SESSION[‘variable name’]);
• Example

<?PHP

Session_start();

 

If(isset($_SESSION['userid']))

$_SESSION['userid']=$_SESSION[' userid ']+1;

Else

$_SESSION[' userid ']=1;

Echo "Views=". $_SESSION[' userid '];

//Unset session using

//Unset($_SESSION[' userid ']);

?>