Hi I backed up a joomla 3.0 site from production server with database backup too. I was using xampp 1.8 version which is old and everything was fine when i set up that joomla site under xampp(localhost) development environment(as normally everyone know the process that i first import the backed up db to a new db and link that db modifying joomla config file..then i put all files under htdocs/joomla3 folder..).
But now i installed xampp latest version 7.1... or 5.6...and when i set up that joomla site and run it like http://localhost/joomla3 i see error that this page not working.when i went for admin login i see just login boxes with no styles and login not works.
I turned off display errors in php.ini but no results.When i set display errors to maximum in joomla config file i see some notice errors like that codes deprecated in that joomla library files and other notice errors mostly. If i do a fresh joomla 3.7 install then things ok so What is wrong when i restore a backed up joomla site or install old joomla 3 versions in xampp latest version ? same behavior happens for joomla 2.5 sites too.