php doc : towards a minimum?

phpDocDuh

<?php
/**
 * @param A      $a useful comment
 * @param B      $b useless comment
 * @param C|null $c useful comment
 */
 function muchDocumented(A $a, B $b, C $c = null)
 {
 }
 
 /**
  * @param $a useful comment
  * @param $b useless comment
  * @param $c useful comment
  */
 function lessDocumented(A $a, B $b, C $c = null)
 {
 }
 
 
 /**
  * @param $a useful comment
  * @param $c useful comment
  */
 function evenLessDocumented(A $a, B $b, C $c = null)
 {
 }