title: Logical operators php true or false
body: <p>As a php neewbie , I try to read a lot of other people´s code in order to learn.
  Today I came across a line like this :</p>
  
  <pre><code>if ( stripos($post_to_check-&gt;post_content, '[' . $shortcode) !== false )
  </code></pre>
  
  <p>I was wondering what is the difference between 
  <code>!==false</code> and <code>==true</code> 
  If someone can explain that to me, It would be greatly appreciated.
  ..and if there is no real difference - what would be the reasons to use the quoted one over the other ??</p>