php class News function AllNews rows db getInstance query SELECT FROM

<?php

 class News {
  
  function AllNews {

   $rows = db::getInstance()-> query("SELECT * FROM `news`");

   while ($rows -> fetch_all()) {
    echo '<div class = "block">';
    echo '<b>'.$rows['name'].'</b><br />';
    echo $rows['text'];
    echo '</div>';
   }

  }

 }

?>