DFibres

Trying to read through this query string to get a list of subjects (sub) and products (pro) sub2=pro73&sub2=pro76&sub2=pro79&sub2=pro90&sub2=pro92&sub3=pro73&sub3=pro74&sub3=pro87&sub3=pro90 so i need 2 -73, 2-76, 2-79, 3-73, 3-74 etc. What am i missing in this code. foreach($_POST as $key => $val) { $sub = substr($key, 3); $pro = substr($val, 3); // $links = "SELECT * FROM table WHERE sub='".$sub."' AND pro='".$pro."';"; }