Href - File Name taken from mysql database - mysql

Question

I currently have a form that uploads the data via PHP to a PDF form and that form is generated and saved on my ftp server. The data is also posted to a mysql database and the name of the file name for the pdf is the unique id of the mysql record (eg. 85124.pdf)
I would like to set up a link where the user can print the generated PDF file as a receipt but cannot figure out how to have the link call up the specific file for that specific record.
For example:
pdf - where the filename would be the same as the unique mysql id (eg. 85124). Is this possible?
I see that I may not have stated properly what I am trying to do and in what enviornment.
I have a page set up where users/clients can book their shipments online ( I work for a small shipping company). The user puts in their shipping adress and such and once they hit the submit button the following happens:
The data is sent to a mysql database on my host (godaddy) and the table is populated with that specific record. The unique id becomes the tracking number for the shipment.
$tracking=mysql_insert_id;
The data is also sent as a FDF file to my ftp and stored in a folder. The name of the FTP is determined by what the the tracking number is after it is put into the mysql database.
$fdf_file=$tracking().'.fdf';
$fdf_dir=dirname(__FILE__).'/results';
The data is then placed into a PDF form that is on my ftp.
$pdf_doc='https://www.mysite.com/shipformrso.pdf';
On the screen after the form is submitted the client receives a confirmation that their from was completed properly and they are given their tracking number.
echo "<font color='red' size='+1'><b>" . 'Your tracking number is '.$tracking() . '. <n\> PLEASE PROCEED TO THE SERVICE DESK TO RECOVER YOUR LABELS.' ."</b></font>";
What I would like to do is have another link where the user can click on and have the browser open up the FDF/PDF file was generated for their specific shipment. This is where I have the problem. I can't seem to figure out how to create the link specific file that was just generated.
Thanks for any help.

Answer 1

As much as I understand, you don't want to show the pdf printing link to your users? At least, the id of the pdf file, which is plainly holded in the db? Then, you can hash your id, POST it to the server and decrypt it on server side then proceed to pdf showing/printing page. In this way no user can understand the hash data, and how to decrypt it. Only your server side script does.;)
For ex:
When user enters here:
blabla.com/?id=SOME_HASHED_VALUE
On the server side:
You decrypt it, and make the SOME_HASHED_VALUE to look like this: 45869 - which is the unique id holded in the db. And then proceed normal flow. ;)