Online PHP editor | refs for FI7R8

<?php $hasil = 52.5; $biasa = array(0,40,65); $puas = array(40,65,80); $istimewa = array(65,80,100); $kb = array_intersect($biasa, $puas); print_r($kb); if ( $hasil <= $kb ) { // hitung nilai kecewa pake rumus fuzzy logic $muKecewa = $kb[1] - $hasil / ($kb[2] - $kb[1]); //output : 52,5 $muBiasa = $hasil - $kb[1] / $kb[2] - $kb[1]; echo $muKecewa; } else { echo "false"; }