Easiest way to implode() a two-dimensional array?

Question

I\'m new to PHP, and don\'t have quite the grip on how it works. If I have a two dimensional array as such (returned by a database):

array(3) {   
    [0]=&         


        

Answer 1

If one simply wants to implode a single array "column" as in this case, then the simplest thing to do is:

implode(",", array_column($array,"tag_id"));