I was assigned for HTML to PDf convertor.  YES ITS IN PHP
Client was asking for Print to PDF on the fly. I have not worked on this issue before..

Here is the list of Scripts I have Gone through....

1) FDF 
2) html2PDF
3)DOMPDF which is used in Drupal
4) html2PS/PDF.
I have tried all of these...

I found html2PS/PDF .
good for me..

Regards
Sushant Danekar