PHP also uses session and cookies to save the implementation code _php instance of user login information

1, User logon Status action class Userlogin

<?php Final class Userlogin {public Function __construct () {} public static function GetUserInfo () {if ( Isset ($_cookie["user_id"]) &&$_cookie["user_id"]&& (Trim ($_cookie["user_id"])!= "")) {if isset ($_
   session["User_info"]) return $_session["User_info"];
   $dao = new Userdao ();
   $user = $dao->find ($_cookie["user_id"]);
    if ($user) {$_session["user_info"] = $user;
    Setcookie ("Docloud_sid", session_id (), time () + 36000);
    
    Setcookie ("user_id", $_cookie["user_id"], time () + 36000); if (array_key_exists ("selected_prj_id", $_cookie)) Setcookie ("selected_prj_id", $_cookie["selected_prj_id"], Time ()
    
    + 36000); if (array_key_exists ("selected_class_id", $_cookie)) Setcookie ("selected_class_id", $_cookie["selected_class_id"],
    
    Time () + 36000); if (array_key_exists ("selected_image_id", $_cookie)) Setcookie ("selected_image_id", $_cookie["selected_image_id"],
    
    Time () + 36000); if (Array_key_exiSTS ("Test_image_ids", $_cookie)) Setcookie ("Test_image_ids", $_cookie["Test_image_ids"], time () + 36000); if (array_key_exists ("Upload_image_ids", $_cookie)) Setcookie ("Upload_image_ids", $_cookie["Upload_image_ids"],
    Time () + 36000);
   return $user;
  } Self::clearcookie ();
 return null;
  The public static function Setuserinfo ($userInfo) {$_session["user_info"] = $userInfo;
  Setcookie ("Docloud_sid", session_id (), time () + 36000);
 Setcookie ("user_id", $userInfo->getid (), time () + 36000);
  public static function IsLogin () {if (Self::getuserinfo ()) {return true;
 return false;
  public static function Deluserinfo () {Self::clearcookie ();
 Session_destroy ();
  private static function ClearCookie () {Setcookie ("Docloud_sid", "", Time ()-36000);
  Setcookie ("user_id", "" ", Time ()-36000);
  Setcookie ("selected_prj_id", "" ", Time ()-36000);
  Setcookie ("selected_class_id", "" ", Time ()-36000); Setcookie ("selected_image_id", "", Time ()-36000);
  Setcookie ("Test_image_ids", "" ", Time ()-36000);
 Setcookie ("Upload_image_ids", "" ", Time ()-36000); }}?>

2, user input user name, password to make the relevant decision

<?php require_once ' init.php ';  If logged in, logout if (Userlogin::islogin () && $_cookie["user_id"]==1) {userlogin::d eluserinfo ();} else if (Userlogin::islogin ())

{Utils::redirect (' Welcome ');}
$username = null;

$password = null;

$msg = ""; if (isset ($_post[' username ')) && isset ($_post[' password '])) {$username = Addslashes (Trim (stripslashes
 [' username ']));
 $password = Addslashes (Trim (stripslashes ($_post [' Password ']));
 
 Validate $errors = Loginvalidator::validate ($username, $password);
  if (empty ($errors)) {//Save $dao = new Userdao ();
  $user = $dao->findbyname ($username);
  $last _login_ip = utils::getipaddress ();
  $user->setlastloginip ($last _login_ip);
  $now = new DateTime ();
  $user->setlastlogintime ($now);
  $dao->save ($user);
  Userlogin::setuserinfo ($user); Flash::addflash (' Login successful!
  ');
 Utils::redirect (' welcome '); foreach ($errors as $e) {$msg. = $e->getmessage ().
 <br> "; }}?>

This PHP at the same time using session and cookies to save user login information is the implementation of the code is a small series to share all the content, I hope to give you a reference, but also hope that we support the cloud habitat community.