Fatal error: Unsupported operand types in ..?

Question

The line where this error was called from is this:

$celkova_suma=mysql_result($c_res, 0, 0)+mysql_result($d_res, 0, 0)-$zlava_suma+$arr[$_POST['sp_platby']];

Can someone tell me what I should be looking for??

Answer 1

Use `var_dump() on each of the parts of your equation and you'll probably find out that one of them is an array or an object, not a string or integer.