Avoid Logged in users to access index.php

Question

I have a ticketing website and I want to avoid users from opening index.php after they logged in. When they are logged in, they are automatically redirected to dashboard.php . Because my Login page is my index.php file and I want to customize it for login only. I want to write some code like below in PHP or jQuery or JavaScript:

<?php
    $call_user = $site_calls->call_user;
    if ($call_user <> 0){
        //redirect to ("dashboard.php");
    }
?>

If someone already logged in , they are redirected to dashboard.php whenever they want to access to index.php page.

Answer 1

`Simplest code, working shown below. Set a session variable after login, check for that session variable in index.php, if its set, redirect to dashboard.php`

<?php
    session_start();
    if(isset($_SESSION["user"]))  //change to your session variable
    {
        header("Location: dashboard.php");
    }
    ?>