My service provider have upgrading from PHP 5.4 to PHP 5.6. I'm currently running EE 2.3.1.
After the upgrade, I get a "ERR_CONTENT_DECODING_FAILED" on frontend. In the backend, I can log in, but none of the menuitems work and I get some mysql errors.
As far as I can see, the mysql_escape_string() is used, but is deprecated in PHP 5.6
The errors in backend: https://www.dropbox.com/s/r769zkuf8qnphvz/Screenshot%202016-03-04%2010.29.35.png?dl=0
First of all, can I upgrade to another version or am I stuck in this version? If so, which possibilities are there, to get the site up and running again?