what is 0050 and why echo 0050 result 40
<p>I am absolutely new in php. I got an question from somewhere. and the question was what will be the output of the following code? </p>

<pre><code>&lt;?php
echo 0050;
?&gt;
</code></pre>

<p>The result is showing 40. My question is why its showing 40 and how?? I need details information about this. what is 0050?</p>
