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phpsessioncentosphp4session-set-save-handler

Why is session data lost using session_set_save_handler?

I'm doing a migration of a PHP4 application from an old version of CentOS to a newer version.

I'm using session_set_save_handler and for some reason when the following callback is invoked,

write(string $sessionId, string $data)

the $sessionId is set but the $data is empty.

My first guess would be the lack of the WDDX module but i've already activated it and it appears correctly in the info.php page.

Do you think it might be a problem on the xml serialization ? Any idea of how to access an error message in some log file in order to find out the real cause?

Thank you in advance.

Solution

  • Even though the WDDX module was activated for some reason i ignore, php must actually be compile with this flag : '--enable-wddx'

    WDDX is only available, if PHP is compiled with WDDX support.

    in

    http://php.net/manual/en/session.configuration.php#ini.session.serialize-handler