title: PHP version upgrade 5.3.25 to 5.6
body: <p>We have a requirement for upgrading the PHP version (5.3.25) to current stable version which is 5.6.17. So, for this we need to find which approach would be best.</p>
  
  <ol>
  <li>Step by step approach, in which we can upgrade from 5.3.X to 5.4.X, 5.4.X to 5.5.X and so on.</li>
  <li>Direct upgrade, in this we will directly upgrade from 5.3.X to 5.6.X.</li>
  </ol>
  
  <p>Apart from the upgrade, what all things we should keep in mind while doing this.</p>
  
  <p>It would be good, if any of you have any documents which we can refer to.</p>