var_dump($node->taxonomy);   //array
   
    $output = "";   
    foreach($node->taxonomy as $terms){
         $output .= " ".$terms->name;
    }   

<?php
    //Check is this special product node or not
    //var_dump($node->taxonomy);   //array
   
    $output = "";   
    foreach($node->taxonomy as $terms){
         if($terms->name == "Special"){
             $isSpecial = "special";
         }else{
             $isSpecial = "no_special";
         }
    }   
   
?>