Hi, i have a modification for SMF system, and want to change some php codes. in this mode users can select an item from a list and then that item will show in profile and their post, but i want change the codes to make multiple select, that user can select multiple choice (item). i know that should some change in html and php codes, mysql, but don't know how. i try some way but didn't work.

SMF Support forum, couldn't help me out.

here is php scripts for mySQL: http://codepen.io/Pedram/pen/Iuvbc

and this html+php for this MOD: http://codepen.io/Pedram/pen/szeBn

i know it's complicate, but i only want to know what and which codes should change to make this mod multiple selection.

thanks