How to store site wide settings in a database?

Question

I\'m debating three different approaches to to storing sitewide settings for a web application.

A key/value pair lookup table, each key represents a setting.

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Answer 1

I have used a mixed approach before in which i had put all the settings (which are not likely to change) into a separate PHP file. The individual settings (which are likely to change) as a key/value pair. That way I could reduce entries from the database thereby reducing my overall query time also this helped my keep the key size small .