Increment character works but adding doesn't. Why?
<pre><code>$a = 'a';
print ($a+1);
print ($a++);
print $a;
</code></pre>

<p>The output is: <code>1 a b</code></p>

<p>So it is clear that increment operator did its job but I don't understand why output is '1' in case <code>$a+1</code>. Can anyone explain? </p>
