title: PHP Warning: date() expects at least 1 parameter, 0 given
body: <p>It may be a very basic question but I am unable to understand whats wrong with the following code </p>
  
  <pre><code>$currentDateTime = new DateTime( date(), 'Europe/London' );
  </code></pre>
  
  <p>it throws following warning</p>
  
  <blockquote>
    <p>PHP Warning:  date() expects at least 1 parameter, 0 given</p>
  </blockquote>