setting up an if else statement to check for a querystring
<p>I'm looking to make an if else statement that does one action if it detects a query string and another action if there isn't one detected. My trouble is in the syntax, I haven't been able to find a good example.</p>

<p>I'm looking for something along the lines of:</p>

<pre><code>if (requisition_id = null)

    do this action

else

    do this action
</code></pre>

<p>I'm basically looking for the syntax needed to identify the querystring, the rest of the code I've got ready for it.</p>

<p>Any help appreciated</p>

<p>Thanks</p>
