why use 0xffff over 65535
<p>I've seen some PHP script which uses <strong>0xffff</strong> in <code>mt_rand(0, 0xffff)</code>. I do <code>echo 0xffff;</code> and results to <strong>65535</strong>. Is there any significance of using this <strong>0xffff</strong>? And also what is that?</p>
