Custom SessionHandler class with database, write issue

This is the fire time I've posted to a mailing list, hopefully I'm doing this correctly. I'm attempting to build my own SessionHandler class implementing the SessionHandlerInterface, to store my sessions in a Postgresql database. This seems to be a pretty common approach, but I'm having an issue where the session data isn't being written to the database at all. The session name is written just fine as is the timestamp, but only a blank serialized string is being placed in the database. I opened a question on StackOverflow to find an answer, but have yet to receive a response as to why this is. Please take a look at it, as it has all the information about my problem. http://stackoverflow.com/questions/26636077/customer-php-sessionhandler-class-write-issue I've been dealing with it for a few days, so hopefully someone can help me out here.