PHP & os/390 question

[4rxsid]

Hi all,

I realize this may be a very obtuse question that perhaps no one out there has an answer to, but here goes....

Does anyone know how I could use PHP to establish a connection to a mainframe (os/390), then browse a VSAM file to look for a certain date range, extract those dates into an array, then close the connection.

I know how to issue an ftp function to actually download the VSAM file I need...however, this file is extremely large (which presents connection problems, etc).

Any ideas??

Thanks.