To run your own copy of DokuWiki you will need the following:
PHP needs to be at least Version 5.6 but newer versions are highly recommended.
The pcre library in PHP needs to be compiled with UTF-8 support. You can test this by executing
pcretest -C and looking for “UTF-8 support” (or “UTF-8 and UTF-16 support”) and “Unicode properties support”.1)
PHP 7.0 installation (on Ubuntu 16.04 or debian 9) need the php-xml package installed. (Fixes error: Uncaught Error: Call to undefined function utf8_decode() )
Any modern browser should work, but check our browser recommendations.