When I wanna install mediawiki 1.18.2, at the beginning of the installation process it tells that "LocalSettings.php not found." and after clicking next a blank white page appears. It tried to find LocalSettings.php on my server but no such file existed. what should I do?
From the MediaWiki website installation instructions:
This is an index of all supported configuration options based on the DefaultSettings.php file.
Never edit DefaultSettings.php; copy appropriate lines to LocalSettings.php instead and amend them as appropriate.
Create your own LocalSettings.php by copying DefaultSettings.php, and then go through and delete the stuff you don't need/want.