- array_intersect: documentation ( source)
<?php
$sks = 17;
$kurang = array(0,11.999,12);
$cukup = array(12,11.999,16.111);
$lebih = array(11.999,16.111,20);
$kc = array_intersect($kurang, $cukup);
$cl = array_intersect($cukup, $lebih);
if ( $sks >= $cl [1])
{
$muCukup = ($sks >= $cl[2]) ? "0" : ($sks <= $cl[2] ? ($sks - $kc[1]) / ($kc[2] - $kc[1]) : "0.5" );
$muLebih = ($sks - $cl[1]) / ($cl[2] - $cl[1]);
if ($muLebih > $muCukup) {
echo "Beban Berlebih";
}
else {
echo "Beban Cukup";
}
}
elseif ($sks < $kc [2] )
{
$muKurang = ($kc[2] - $sks) / ($kc[2] - $kc[1]);
$muCukup = ($sks - $kc[1]) / ($kc[2] - $kc[1]);
if ($muKurang > $muCukup) {
echo "Beban Kurang";
}
else {
echo "Beban Cukup";
}
}