title: Month by week of the year?
body: <p>I'm trying to get the number of the month of the year by the number of a week of the year and the year.
  So for example week 1 is in january and returns 1, week 6 is in february so I want 2.</p>
  
  <p>I tried to go with <code>date_parse_from_format('W/Y')</code> but had no success (it's giving me errors).</p>
  
  <p>Is there any way to go with <code>date_parse_from_format()</code> or is there another way?</p>