When there is no double star `/**` it is no more a doc comment, but comment only.

Product.php

<?php
/**
 * @Entity @Table(name="products")
 */
class Product
{
    /**
     * @Id @Column(type="integer")
     * @GeneratedValue
     * @var int
     */
     protected $id;

     /*
      * @Column(type="string")
      * @var string
      */
     protected $name;

     public function getId()
     {
         return $this->id;
     }

     public function getName()
     {
         return $this->name;
     }

     public function setName($name)
     {
         $this->name = $name;
     }
}

I did asked the question on twitter : https://twitter.com/harikt/status/682972117785169924

Thank you Jonathan H. Wage and Damon Jones

The answer is : Without the double asterisk, it’s just a block comment. Annotations are parsed from docblocks only.

http://php.net/manual/en/reflectionclass.getdoccomment.php#99938