title: PHP - MySQL: How to select data grouping by date
body: <p>I have an my SQL database like this:</p>
  
  <pre><code>id | name | birth_date
  1 | John | 20-03-2000
  2 | Dani | 20-03-2000
  3 | Julia | 19-12-1999
  4 | Martin | 12-08-2001
  5 | May | 19-12-1999
  </code></pre>
  
  <p>.....<br></p>
  
  <p>How can I get:</p>
  
  <pre><code>20-03-2000
  John
  Dani
  
  19-12-1999
  Julia
  May
  
  12-08-2001
  Martin
  </code></pre>
  
  <p>Thank you </p>