PHP 7 Session Handling

[albertlast]

I played today with php 7 and noticed that php 7 got a stricter version of customer session handling,
see: http://stackoverflow.com/questions/34117651/php7-symfony-2-8-failed-to-write-session-data

So I modified some session function that they return true or false.
Based on the information if the db action was successful or not.

The intial error was: http://snag.gy/hDZPk.jpg

Error-msg in log:
2: Unknown: Session callback expects true/false return value

2: Unknown: Failed to write session data (user). Please verify that the current setting of session.save_path is correct (D:\Programme\xampp\tmp)

[Dragooon]

I'm guessing this is backwards compatible until 5.2.7?

[albertlast]

I'm dunno.
But the target of smf 2.1 is php 5.3+