Group mysql results by category and display them into groups under each category

Question

I am trying to create a simple css menu that gets the data from a mysql table.

My idea is to have menu like this

    Category 1
    - link 1
    - li         


        

Answer 1

Your query is wrong

$sql = "SELECT * FROM content WHERE group by category";

should be

$sql = "SELECT * FROM content group by category";

Also since mysql is deprecated avoid using it. Use mysqli or PDO instead