$decisions = array_fill(0, {0}, 0);
for ($i = 0, $d = 0, $l = {1}; $i < $l; $i++) {{
    for ($j = $i + 1; $j < $l; $j++) {{
        $tmp = 0.;
        for ($k = $starts[$j]; $k < $ends[$j]; $k++) {{
            $tmp += $kernels[$k] * $coeffs[$i][$k];
        }}
        for ($k = $starts[$i]; $k < $ends[$i]; $k++) {{
            $tmp += $kernels[$k] * $coeffs[$j - 1][$k];
        }}
        $decisions[$d] = $tmp + $inters[$d];
        $d++;
    }}
}}
