$_SESSION[] array elements in pHp

Question

How to use $_SESSION[] array elements among multiple pages of same website? And when/how to destroy them? Error:

Variable undefined..

If you have a better suggestion, please help me out.

Code for action.php

<?php
include 'someheader.php';
session_start();
if(isset($_POST['submit'])
{
    $_SESSION['name']=$_POST['name'];

    //Some Codes Here

}
include 'footer.php';
?>

Other php file in same directory

<?php
if(isset($_SESSION['name']))
{
     echo "Hi $_SESSION['name'].\n";
     echo "You have been logged in.";
 }
?>

You forgot a session_start(); at the beginning of your second php file. — SamyQc
– SamyQc, Commented Apr 12, 2016 at 20:44

Eduardo Galván · Accepted Answer · 2016-04-12 20:39:50Z

1

Each php file must have a session_start() to be able to access session variables. As for how to destroy them, check the session_destroy function. When to destroy them? Well basically you do it when you no longer need them, for example when you log out.

answered Apr 12, 2016 at 20:39

Eduardo Galván

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user6186801 · Accepted Answer · 2016-04-12 20:41:57Z

0

In php, it's better to put session_start() in the first statement line of php pages. Use it once per page, at the very top, before you plan to use any $_SESSION variables.

<?php
session_start();

To obtenir a value in session :

$username = $_SESSION['username'];
$password = $_SESSION['password'];

To delete a value in session:

unset($_SESSION['temp']);

To destroy a session :

session_destroy();

Hope this could be helpful.

answered Apr 12, 2016 at 20:41

user6186801

1 Comment

Rob G Over a year ago

also worth noting you can set sessions to automatically start via session.auto_start

Arleigh Hix · Accepted Answer · 2016-04-12 20:47:04Z

0

You should have this as the first line of every file that uses $_SESSION

session_start();

This makes it available in the current script. Here's the basics, see the note after the example. Otherwise, your usage is correct.

answered Apr 12, 2016 at 20:47

Arleigh Hix

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