- array_intersect: documentation ( source)
- print_r: documentation ( source)
<?php
$hasil = 80;
$kecewa = array(0,40,65);
$biasa = array(40,65,80);
$puas = array(65,80,100);
$kb = array_intersect($kecewa, $biasa);
$bp = array_intersect($biasa, $puas);
print_r($kb);
print_r($bp);
if ( $hasil <= $bp && $hasil < $kb )
{
// hitung nilai
$muKecewa = ($kb[2] - $hasil) / ($kb[2] - $kb[1]); //output : 52,5
$muBiasa = ($hasil - $kb[1]) / ($kb[2] - $kb[1]);
echo "muKecewa ".$muKecewa;
echo " muBiasa ".$muBiasa;
}
elseif ( $hasil >= $kb )
{
$muBiasa = ($hasil - $kb[1]) / ($bp[1] - $kb[1]);
$muPuas = ($muBiasa >= 1) ? '0.5' : '0';
echo "muBiasa".$muBiasa;
echo "muPuas" .$muPuas;
}