Session - Unexpected

Parse error: syntax error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /homez.221/benjaminug/www/CMS_Sources_Web/core/Session.php on line 4

<?php  
class Session{ 
  
 public function __construct(){ 
  if(!isset($_SESSION)){ 
   session_start();  
  } 
 } 

 public function setFlash($message,$type = 'success'){ 
  $_SESSION['flash'] = array( 
   'message' => $message, 
   'type' => $type 
  );  
 } 

 public function flash(){ 
  if(isset($_SESSION['flash']['message'])){ 
   $html = '<div class="alert-message '.$_SESSION['flash']['type'].'"><p>'.$_SESSION['flash']['message'].'</p></div>';  
   $_SESSION['flash'] = array();  
   return $html;  
  } 
 } 

 public function write($key,$value){ 
  $_SESSION[$key] = $value; 
 } 

 public function read($key = null){ 
  if($key){ 
   if(isset($_SESSION[$key])){ 
    return $_SESSION[$key];  
   }else{ 
    return false;  
   } 
  }else{ 
   return $_SESSION;  
  } 
 } 

 public function isLogged(){ 
  return isset($_SESSION['User']->role); 
 } 

 public function user($key){ 
  if($this->read('User')){ 
   if(isset($this->read('User')->$key)){ 
    return $this->read('User')->$key;  
   } else{ 
    return false; 
   } 
  } 
  return false; 
 } 

}