WhyNotThis

Thank you for the answers. I know this technic of renaming the installation folder after installing, it is used by XTCommerce (or XTC Modified, open source version), it is a shop system which i'm familiar with. But i don't want to do it this way I will take a look to Composer, but doesn't it require that every host where i install my application has Composer installed?

How did you solved your installation check? I'm searching for the best way to do it because it is a proccess that must run at the begining on every request. I'm trying to develop my CMS light and fast as possible and Wordpress costs lot of server resources and takes too long to send a response back. Christian, i want to set a constant as you told, but this only makes sense to be defined after the instalation was checked. WP makes one select for each db table to see if it exists, wouldn't be better to run only one sql statement to get the full schema? Thanks