title: new DateTime() vs new DateTime('NOW') in php
body: <p>Before I post this question, I searched in several places for answer for this. I really could not find the proper answer. </p>
  
  <p>I evaluated the both way following...</p>
  
  <pre><code>$date = new DateTime()
  </code></pre>
  
  <p>amd</p>
  
  <pre><code>$date = new DateTime('NOW')
  </code></pre>
  
  <p>Is it must for the both above give the same result or is there any circumstance they both differ?</p>