title: Convert Jalali calendar to Gregorian by PHP in CodeIgniter
body: <p>I need to store Date in Persian (Jalali) date in MySQL. I'm using CodeIgniter.
  I need something like this:</p>
  
  <pre><code>$Date = Jalali_to_Georgian(1393,5,28) // Output: "2014/08/19"
  </code></pre>
  
  <p>Do I need to create a new library for this?</p>