Class error

<?php
class Class1 {

   public $publiek    = "Publieke variabele<br />"; //een publieke string
   
  
   public function hallo() {
   
        echo "hallo!<br />";
   
   }
}

$obj = new Class1();

echo $obj->publiek;

$obj->hallo();

?>

<?php
class Class1 {
 
   public $publiek    = "Publieke variabele<br />"; //een publieke string
 
 
   public function hallo() {
 
        echo "hallo!<br />";
 
   }
}
 
$obj = new Class1();
 
echo $obj->publiek;
 
$obj->hallo();
 
?>