We did our best to stay compatible with v9 code and templates.
However, it could be possible some things might not work.
If so, please post problems and solutions in here.
For a start i added a script which you can use to convert deprecated php functions.
Use as: $ php v9tov10.php /path/to/your/code
Or if you want to let it save most changes $ php v9tov10.php --save /path/to/your/code
Keep in mind the second does NOT work out of the box to prevent screw-ups.
You must uncomment line 377