PHP & MySQLi OOP - Session value not being set? -


when logging user in have checked the submitted values being set, (tested var_dump), validation of checking inputed values against database works fine redirect index.php page works fine, session value not being set "not logged in" message being shown @ top of page implemented see if code worked, should saying "logged in" when redirected index.php page. result of var_dump on session of userid null. should users id.

login.php:

<?php   require_once('includes/classes/session.php'); require_once('includes/classes/database.php'); require_once('includes/classes/user.php'); require_once('includes/functions/general.php'); require_once('includes/functions/security.php'); require_once('includes/functions/user.php');  if($session->isloggedin()) {     redirect('index.php'); }  if (isset($_post['submit'])) {     $username = trim($_post['username']);     $password = trim($_post['password']);      $founduser = user::verify($username, $password);     if ($founduser) {         $session->login($founduser);         redirect('index.php');     } else {         $error = "combination incorrect";     } }  ?>

session.php:

<?php  class session {      private $loggedin;     public $userid;      function __contruct() {         session_start();         $this->checklogin();     }      public function isloggedin() {         return $this->loggedin;     }      private function checklogin() {         if(isset($_session['userid'])) {             $this->userid = $_session['userid'];             $this->loggedin = true;         } else {             unset($this->userid);             $this->loggedin = false;         }     }      public function login($user) {         if($user) {             $this->userid = $_session['userid'] = $user->userid;             $this->loggedin = true;         }     }      public function logout() {         unset($_session['userid']);         unset($this->userid);         $this->loggedin = false;     } }  $session = new session();  ?>

user.php:

<?php  class user {  public $userid; public $username; public $password; public $email; public $firstname; public $lastname; public $access; public $active;  public static function getusers() {     return self::getbysql("select * users"); }  public static function getuserid($id=0) {     global $db;     $resultarray = self::getbysql("select * users userid={$id}");     return !empty($resultarray) ? array_shift($resultarray) : false; }  public static function getbysql($sql) {     global $db;     $result = $db->query($sql);     $objarray = array();     while ($row = $db->fetcharray($result)) {         $objarray[] = self::instantiate($row);     }     return $objarray; }  public function getname() {     if (isset($this->firstname) && isset($this->lastname)) {         return $this->firstname . " " . $this->lastname;     } else {         return "";     } }  private static function instantiate($record) {     $object = new self;      foreach($record $attr=>$value){         if($object->hasattr($attr)) {             $object->$attr = $value;         }     }     return $object; }  private function hasattr($attr) {     $objectvars = get_object_vars($this);     return array_key_exists($attr, $objectvars); }  public static function verify($username, $password) {     global $db;     $username = $db->prepare($username);     $password = $db->prepare($password);      $sql = "select * users username = '{$username}' , userpass = '{$password}'";     $resultarray = self::getbysql($sql);     return !empty($resultarray) ? array_shift($resultarray) : false; }  }  ?>


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