title: php add x weeks to a date and then find the next given day
body: <p>I can add x week to my date</p>
  
  <pre><code>//$ultima_azione &lt;--- 2015/07/15
  //$data['intervallo'] &lt;---- 5
  
  $mydate = date("Y-m-d",strtotime($ultima_azione." +".$data['intervallo']." weeks"));
  </code></pre>
  
  <p>now how can i give a day starting from that week 
  example:</p>
  
  <pre><code>//$mydate + "next Monday" -----&gt; final date
  </code></pre>
  
  <p>and this ve to work like, if today is Monday and i add weeks to jump to an other Monday and then i select the next Monday the week don't ve to change</p>