会话类中的变量没有传递到新页面 - Variables from Session Class not passing to new pages

Variables from Session Class not passing to new pages

本文关键字：新页面变量会话 | 更新日期: 2023-09-27

我定义了一个会话类，它使用$sessionVars数组中$_POST变量的值。当用户登录到创建会话类的新实例时，构造函数将设置会话变量。我检查了一下，这是正常工作的。问题:当我试图从不同的页面访问这些变量会话显示，它没有开始，这些变量是未定义的。困惑，因为我认为$_SESSION是一个超级全局意味着它可以访问所有的时间(I。(范围不重要)。当我试图访问$_SESSION变量时，我怀疑我做错了什么，因为它们在一个类中。我很感激任何帮助……提前感谢。

    class userSession{
      public function __construct($sessionVars){
      session_start();
      $_SESSION['userEmail']=$sessionVars['user'];
      $_SESSION['userID']=$sessionVars['userID'];
      $_SESSION['userFolder']='users/user_'.$_SESSION['userID'];
     }
    /*just for housekeeping. not used in application*/
    function showvars(){
    echo $_SESSION['userEmail'].'<br><br>';
    echo $_SESSION['userID'].'<br><br>'; 
    echo $_SESSION['userFolder'];
    $sessionID=session_id();
    echo '<br><br>'.$sessionID; 
   }
   }//**END USER SESSION

/*This is the login script that calls the session*/
include 'library.php'; 

  $show=new render;
  $show->index();
  if(!isset($_POST['login']) ){
  $show->usrLogin();
  } else{
     if(!empty($_POST['email'])){  
     $postVars=array('user'=>$_POST['email'],'pass'=>$_POST['password']);
     $user=new user();
     $data=$user->loginUser($postVars);

     $currSession=new userSession($data);
     }else{
     die('No data in POST variable');}
     }
 /*file upload that needs the session[userFolder] variable*/
    function file_upload(){ 
      $userFolder=&$_SESSION['userFolder'];
      echo '<hr>userFolder is : '.$userFolder;
     function do_upload(){
     if(!empty( $_FILES) ){
     echo $userFolder.'<hr>';
     $tmpFldr=$_FILES['upFile']['tmp_name'];
    $fileDest=$userFolder.'/'.$_FILES['upFile']['name'];
    if(move_uploaded_file($tmpFldr,$fileDest)){
      echo 'file(s) uploaded successfully';
      }
    else{
     echo 'Your file failed to upload<br><br>';
     }
     return $fileDest; //returns path to uploaded file
    } else{die( 'Nothing to upload');}   
   }//END FUNCTION DO_UPLOAD, 
   /*Perform upload return file location*/
   $fileLoc=do_upload();
   return $fileLoc;
  }

您需要在使用会话的每个页面上实例化该类的对象(或手动启动会话)。另外，您将不需要该构造函数，而是使用其他方式设置变量。这只是为了说明它如何与您当前的代码一起工作，还有更好的方法:

class userSession {
    public function __construct(){
        session_start();    
    }
    function set_login_vars($sessionVars){
        $_SESSION['userEmail']=$sessionVars['user'];
        $_SESSION['userID']=$sessionVars['userID'];
        $_SESSION['userFolder']='users/user_'.$_SESSION['userID'];
   }
}
//page1.php
$session = new userSession;
$session->set_login_vars($loginVars);
//page2.php
//you need to start the session, either with the class
$session = new userSession;
//or session_start();
print_r($_SESSION);