title: Grab all Wednesdays in a given month in PHP
body: <p>This is the function I'm trying to write:</p>
  
  <pre><code>function getWednesdays($month, $year) {
     // Returns an array of DateTimes representing all Wednesdays this month.
  }
  </code></pre>
  
  <p>Any ideas?  Thanks-</p>