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<?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 echo $muKecewa; echo "<br />"; } else { echo "false"; }

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