title: PHP increment operator
body: <pre><code>&lt;?php
   $s = "pa99";
   $s++;
   echo $s;
  ?&gt;
  </code></pre>
  
  <p>The above code outputs to "pb00"
  What i wanted was "pa100" and so on.</p>
  
  <p>But also in case its "pa", I want it to go to "pb" which works well with
  increment operator.</p>