$value) { $x = 0; foreach ($value as $k => $v) { if ($x == 0) { $x = $v; } else { $x -= $v; } } $x = abs($x); if ($x < $tmp) { $hcap = $key; $tmp = $x; } } foreach ($_spreads as $key => $value) { if ($key == $hcap) { $_spreads[$key]['active_spread'] = 1; } else { $_spreads[$key]['active_spread'] = 0; } } } }