SAP CRM survey Suite Internet Scenaraio Mail To option - PHP

Hi all,

Followed steps as per below link for sending an survey email as HTML link in email

http://wiki.sdn.sap.com/wiki/display/CRM/Survey+processing+without+opening+a+connection+to+the+CRM+Backend+from+the+Internet

I followed all the steps in the link above except the PHP Scripting for the Mailto: scenario.
But when I submit the survey , a mail is opened in my outlook without the POSTDATA.ATT file.

I am not sure how to write this PHP Scripting. IT would be great if you could guide on that.
Thanks in advance..

Regards

Kiran