“Parse error: syntax error, unexpected” and the WordPress Theme Editor no longer working!

Download the theme file per SSH or FTP, edit it locally, and upload it again.

General advice: Never edit files on the production site. Run a local test installation, edit everything locally. Test it, then put it on the server.

Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)