Removing Commented Lines in PHP
<p>I've been doing some work with different PHP scripts and had a quick question.  In quite a few of them there are commented out lines like these:</p>

<pre><code>/*
  $a = 1; $b = 2; $x = 1;

  $y = $a * $x + $b;

  if ( $y &lt; 5 )
*/
</code></pre>

<p>Are these lines safe to delete if they are commented out?  What's the point of having code in files that's just commented out?</p>
