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weight_product.php
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<!DOCTYPE html>
<html lang="en">
<?php
include "./config/connection.php";
$query = "SELECT dss_kost.nama, dss_kost.harga, dss_kost.luas_kamar, dss_kost.jarak, dss_fasilitas_kamar.nilai AS fasilitas_kamar, dss_fasilitas_penunjang.nilai AS fasilitas_penunjang, dss_fasilitas_lingkungan.nilai AS fasilitas_lingkungan FROM dss_kost INNER JOIN dss_fasilitas_kamar ON dss_kost.id_fasilitas_kamar = dss_fasilitas_kamar.id INNER JOIN dss_fasilitas_penunjang ON dss_kost.id_fasilitas_penunjang = dss_fasilitas_penunjang.id INNER JOIN dss_fasilitas_lingkungan ON dss_kost.id_fasilitas_lingkungan = dss_fasilitas_lingkungan.id";
$data = mysqli_query($connection, $query);
$arrayOfSample = [];
function array_push_assoc($array, $key, $value)
{
$array[$key] = $value;
return $array;
}
function fuzzyForPrice($price)
{
$value = 0;
if ($price < 250) {
$value = 5;
} else if ($price > 250 && $price <= 500) {
$value = 4;
} else if ($price > 500 && $price <= 750) {
$value = 3;
} else if ($price > 750 && $price <= 1000) {
$value = 2;
} else {
$value = 1;
}
return $value;
}
function fuzzyForDistance($distance)
{
$distanceValue = 0;
if ($distance < 500) {
$distanceValue = 5;
} else if ($distance > 500 && $distance <= 750) {
$distanceValue = 4;
} else if ($distance > 750 && $distance <= 1000) {
$distanceValue = 3;
} else if ($distance > 1000 && $distance <= 1500) {
$distanceValue = 2;
} else {
$distanceValue = 1;
}
return $distanceValue;
}
while ($d = mysqli_fetch_assoc($data)) {
$arrayOfSample = array_push_assoc(
$arrayOfSample,
$d['nama'],
[
fuzzyForPrice(abs($d['harga'])),
abs($d['luas_kamar']),
fuzzyForDistance(abs($d['jarak'])),
abs($d['fasilitas_kamar']),
abs($d['fasilitas_penunjang']),
abs($d['fasilitas_lingkungan']),
]
);
}
// ARRAY OF WEIGH CALCULATION
$harga = -1 * abs($_POST['harga']);
$jarak = -1 * abs($_POST['jarak']);
$luas_kamar = abs($_POST['luas_kamar']);
$fasilitas_kamar = abs($_POST['fasilitas_kamar']);
$fasilitas_penunjang = abs($_POST['fasilitas_penunjang']);
$fasilitas_lingkungan = abs($_POST['fasilitas_lingkungan']);
$arrayOfWeight = [$harga, $jarak, $luas_kamar, $fasilitas_kamar, $fasilitas_penunjang, $fasilitas_penunjang];
$sumOfWeight = 0;
foreach ($arrayOfWeight as $key => $value) {
$sumOfWeight += abs($value);
}
// WEIGHT NORMALIZATION
$normalizedWeight = [];
foreach ($arrayOfWeight as $key => $value) {
$dividedBySum = $value / $sumOfWeight;
array_push($normalizedWeight, $dividedBySum);
}
// CALCULATE THE VECTOR OF S VALUE
$arrayOfVectorS = [];
$arrayOfInside = [];
$x = 1;
foreach ($arrayOfSample as $key => $value) {
$arrayOfVectorS[$key] = 1;
foreach ($value as $keyVal => $thisValue) {
$pow = pow($thisValue, $normalizedWeight[$keyVal]);
$arrayOfVectorS[$key] *= $pow;
}
}
// CALCULATE VECTOR
$sigmaVector = array_sum($arrayOfVectorS);
foreach ($arrayOfVectorS as $key => $value) {
$arrayOfFinal[$key] = $value / $sigmaVector;
}
// SORTING ARRAY
arsort($arrayOfFinal);
// SHOW THE TABLE
echo "<table class='table table-hover'>
<thead>
<th>Nama Kost</th>
<th>Rank</th>
</thead>
<tbody>";
foreach ($arrayOfFinal as $key => $value) {
echo
"<tr>
<td>$key</td>
<td>$value</td>
</tr>";
}
echo "</tbody></table>";
?>
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
<link rel="stylesheet" href="bootstrap.css">
</head>
<body>
</body>
</html>