PHP simple html dom Parser - Simple Script
<p>I need some help for creating a simple script that check on other site.</p>

<p>Example: I have index.php and an input form like this.</p>

<pre><code>&lt;form method="post"&gt;
    &lt;input type="text" name="cf" placeholder="Codice Fiscale"/&gt;
    &lt;input type="submit" value="Submit"&gt;
&lt;/form&gt;
</code></pre>

<p>and <code>index2.php</code> where I need to get and show validation or error not found
where URL will be <code>index2.php?cf=FFFFF21243F1234F354F</code></p>

<p>other URL where I need to check is: <a href="http://www.nonsolocap.it/codice-fiscale/controllo/?cf=FFFFF21243F1234F354F" rel="nofollow">http://www.nonsolocap.it/codice-fiscale/controllo/?cf=FFFFF21243F1234F354F</a>  (this url shows Error cuz this CF does exist)</p>