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How to Sum Column in MySQL using PHP/MySQLi

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How to Sum Column in MySQL using PHP/MySQLi

In this tutorial, I'm going to show you how to sum MySQL columns using PHP/MySQLi. I've also included in this tutorial the use of GROUP BY in MySQLi query and the 2 MySQLi methods which I have included in the comments. This tutorial does not include a good design but will give you an idea of the topic.

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