title: strtotime PHP for date numerical value + 1 week
body: <p>I have a day value of 1 through 7 where 1 is Monday and 7 is Sunday.</p>
  
  <p>I need to get a strtotime value of the appropriate day NEXT week.</p>
  
  <p>For example:Today is Tuesday 13th November. </p>
  
  <p>My day value is "2" so strtotime should return the appropriate value for Tuesday 20th November.
  My day value is "1" so strtotime should return the appropriate value for Monday 19th November.
  My day value is "5" so strtotime should return the appropriate value for Friday 23rd November.</p>
  
  <p>I'm hoping this can be done with just a few built in PHP functions (strtotime(+1week+something))?
  If not I will attempt to code some comparison checks!</p>
  
  <p>Thanks!</p>