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functions.php
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functions.php
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<?php
require_once "data/kriteria.php";
require_once "data/admin.php";
function countNormalization($bobot) {
$kriteria = getAllCriteria();
$total_bobot = 0;
foreach ($kriteria as $k) {
$total_bobot += $k['bobot'];
}
return $bobot / $total_bobot;
}
function countScore($id) {
$siswa = getStudentById($id);
$kriteria = getAllCriteria();
// status_siswa
if ($siswa['status'] == "Lengkap") $kode[0] = 1;
else if ($siswa['status'] == "Yatim" || $siswa['status'] == "Piatu") $kode[0] = 3;
else $kode[0] = 5;
// penghasilan_ortu
if ($siswa['penghasilan_ortu'] > 8000000) $kode[1] = 1;
else if ($siswa['penghasilan_ortu'] > 6000000) $kode[1] = 2;
else if ($siswa['penghasilan_ortu'] > 4000000) $kode[1] = 3;
else if ($siswa['penghasilan_ortu'] > 2000000) $kode[1] = 4;
else if ($siswa['penghasilan_ortu'] > 0) $kode[1] = 5;
// pekerjaan_ortu
if ($siswa['pekerjaan_ortu'] == "Wiraswasta") $kode[2] = 1;
else if ($siswa['pekerjaan_ortu'] == "Karyawan Swasta") $kode[2] = 2;
else if ($siswa['pekerjaan_ortu'] == "PNS/TNI/Polri") $kode[2] = 3;
else if ($siswa['pekerjaan_ortu'] == "Buruh/Pegawai Honor") $kode[2] = 4;
else $kode[2] = 5;
// tanggungan_ortu
if ($siswa['tanggungan_ortu'] == 1) $kode[3] = 1;
else if ($siswa['tanggungan_ortu'] == 2) $kode[3] = 2;
else if ($siswa['tanggungan_ortu'] == 3) $kode[3] = 3;
else if ($siswa['tanggungan_ortu'] == 4) $kode[3] = 4;
else $kode[3] = 5;
// nilai
if ($siswa['nilai'] > 95) $kode[4] = 5;
else if ($siswa['nilai'] > 85) $kode[4] = 4;
else if ($siswa['nilai'] > 75) $kode[4] = 3;
else if ($siswa['nilai'] > 64) $kode[4] = 2;
else $kode[4] = 1;
$skor = 1;
for ($i = 0; $i < count($kriteria); $i++) {
$bobot = $kriteria[$i]['atribut'] == "Benefit" ? countNormalization($kriteria[$i]['bobot']) : -1 * countNormalization($kriteria[$i]['bobot']);
$skor *= pow($kode[$i], $bobot);
}
$hasil = [
"kode" => $kode,
'skor' => round($skor, 4)
];
return $hasil;
}
function countResult($id_siswa) {
$siswa = getAllStudent();
$total_score = 0;
foreach ($siswa as $s) {
$skor = countScore($s['id_siswa']);
$total_score += $skor['skor'];
}
$skor = countScore($id_siswa);
return round($skor['skor'] / $total_score, 4);
}
// Validasi
function validateDataStudent(&$errors, $data) {
$nama_siswa = htmlspecialchars($data['nama_siswa']);
$no_telp = htmlspecialchars($data['no_telp']);
$email = htmlspecialchars($data['email']);
$alamat = htmlspecialchars($data['alamat']);
$nilai = htmlspecialchars($data['nilai']);
$penghasilan = htmlspecialchars($data['penghasilan']);
foreach ($data as $key => $value) {
// Validate not null
if ($key != 'ktp' && $key != 'pas_foto' && $key != 'sktm' && (isset($data['tambah']) && $key != 'tambah') && (isset($data['edit']) && $key != 'edit') ) {
if (!$value) $errors[$key] = "Field tidak boleh kosong";
}
// validate number
if ($key == 'no_telp' || $key == "penghasilan") {
if (!preg_match("/^\d+$/", $value)) $errors[$key] = "Field harus berisi angka bulat";
}
if ($key == "nilai") {
if (!preg_match("/^[0-9.]+$/", $value)) $errors[$key] = "Field harus berisi angka";
}
}
return $errors;
}
function validateLogin(&$errors, $data) {
$admin = getAdminByUsername($data['username']);
if (!empty($admin)) {
if ($admin['password'] != hash('sha256', $data['password'])) {
$errors['password'] = "Password salah";
}
} else {
$errors['username'] = "Username belum ada";
}
foreach ($data as $key => $value) {
// Validate not null
if (!$value) $errors[$key] = "Field tidak boleh kosong";
}
if (empty($errors)) {
$_SESSION['login'] = true;
$_SESSION['username'] = $admin['username'];
header("Location: index.php");
exit();
}
return $errors;
}