title: Create an array of business days
body: <p>I need a method for creating an array of "business days" in PHP beteewn 2 dates.</p>
  
  <p>For example:</p>
  
  <pre><code>getWorkingDays("2008-01-01","2009-06-30");
  </code></pre>
  
  <p>Will create an array like the following:</p>
  
  <pre><code>Array
  (
      [0] ="2008-01-01",
      [1] ="2008-01-05",
      [2] ="2008-01-06",
      [3] ="2008-01-07",
      [4] ="2008-01-08",
      [5] ="2008-01-09",
      [6] ="2008-01-12",
      [7] ="2008-01-13",
      [8] ="2008-01-14",
      ...
  ) 
  </code></pre>