How to pass content to called progr

[SirCharles]

How to pass content to called program? I'm writing a Perl driver that calls php or java programs. The Perl script presents the user with the Page and interfaces with the server to get POST vars. The php or java, called via a system command from Perl, needs to be able to refernence the form data as well. I'd like to be able to have the php or java reference the content and server information that would normally be available to the Perl driver. Ex. Large file in a large file transfer using multipart/form-data form needs to be accessed by the PHP or JAVA routine called from the Perl application.

Any ideas?