starting a session in php code example

Example 1: php start a session

session_start();
if(!isset($_SESSION["started"]){ //Check if the session already exist
    //If it does not exist we append attributes we need in
	$_SESSION["started"] = true;
  	$_SESSION["attribute_1"] = $value_1;  
  	...
    $_SESSION["attribute_n"] = $value_n;      
}

Example 2: php session variables

<?php
   session_start();
   $_SESSION['var'];
?>

Example 3: session start php

<?php
// This sends a persistent cookie that lasts a day.
session_start([
    'cookie_lifetime' => 86400,
]);
?>

Example 4: can we acces session variable in two files

<?php
  session_start();

  ...

  if($responseCode == 1) {
    $_SESSION['card_id']    = $_POST['card_id'];
    $_SESSION['password']   = $_POST['password'];
    print '<script type="text/javascript">'; 
    print 'window.location = "http://domain.com/File2.php";';
    print '</script>';
  }
?>