title: DEFINE vs Variable in PHP
body: <p>Can someone explain the difference between using</p>
  
  <pre><code>define('SOMETHING', true);
  </code></pre>
  
  <p>and</p>
  
  <pre><code>$SOMETHING = true;
  </code></pre>
  
  <p>And maybe the benefits between one or the other?</p>
  
  <p>I use variables everywhere and even in a config type file that is included to everypage I still use variables as I don't see why to use the define method.</p>