Online PHP editor | refs for v7El9

<?php $hasil = 40; $kecewa = array(0,40,65); $biasa = array(40,65,80); $puas = array(65,80,100); $kb = array_intersect($kecewa, $biasa); print_r($kb); if ( $hasil <= $kb ) { // hitung nilai kecewa pake rumus fuzzy logic $muKecewa = ($kb[2] - $hasil) / ($kb[2] - $kb[1]); //output : 52,5 $muBiasa = ($muKecewa <= 1) ? '0.5' : '0'; // output: bool(true) echo $muKecewa; echo "<br />"; echo $muBiasa; } else { echo "false"; }