Parcourir valeurs possibles d’un type ENUM en PHP

Fonction PHP permettant de parcourir tous items du champs "monchamps" de type ENUM (énuméré) de la table "matable"

fonction ListeDesEnumeres(){ 
  $result = mysql_query("SHOW COLUMNS FROM matable LIKE 'monchamps'");
  while(list($field,$type,$null,$key,$default,$extra) = mysql_fetch_row($result)){
     list($junk,$type) = explode('(',$type);     
     list($type) = explode(')',$type);   
     $type = str_replace("'",'',$type);   
     $types = explode(',',$type);  
  }    
  mysql_free_result($result);    
  unset($type);  
  //foreach($types as $type) echo $type;    
  return $types; 
}