Mapping variables from a string formula
<p>I have a textarea where user can create a dynamic formulas using dropdown lists(for operators, variables etc) like this:</p>

<pre><code>basic / workingDays * attendingDays
</code></pre>

<p>where values of <code>basic</code>, <code>workingDays</code>, <code>attendingDays</code> are saved in database. I want to map these variable from database during runtime. How can I do this.</p>
