How do I generate a Filemaker PersistentID in PHP

I am trying to generate a PersistentID in a PHP script identical to what would be generated by Filemakers:
Get (PersistentID) which returns text representing a unique identifier in the form of a 32-digit hexadecimal string of the computer or device on which FileMaker is running. Example of value returned: 78569d0bd40b898a64e7d08ccdea8220

The purpose of this is to provide a unique identifier which can be used by both Filemaker and PHP. Does anyone have any suggestions as to how to achieve this? essentially I am do a REST post through CURL via PHP and then redirecting to a webdirect page to provide an auto-login.  

The difficulty here is that I need the PHP script to generate a persistent ID that is exactly the same value that Filemaker would generate using Get (PersistentID)

Jeremy LeysTechnical LeadAsked:
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Dave BaldwinFixer of ProblemsCommented:
There is no reason to think that PHP can do that since it is generated by Filemaker for a particular device.  You would have to get it from Filemaker somehow.

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Jeremy LeysTechnical LeadAuthor Commented:
You are right, I didn't think it could be done, but I thought it was worth checking
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