<?php
echo "PHP OK<br>";
echo "DB_HOST: " . (getenv('DB_HOST') ?: 'TIDAK ADA') . "<br>";
echo "DB_NAME: " . (getenv('DB_NAME') ?: 'TIDAK ADA') . "<br>";

$host = getenv('DB_HOST') ?: 'localhost';
$user = getenv('DB_USER') ?: 'root';
$pass = getenv('DB_PASS') ?: '';
$name = getenv('DB_NAME') ?: 'db_webgis';
$port = (int)(getenv('DB_PORT') ?: 3306);

$conn = @new mysqli($host, $user, $pass, $name, $port);
if ($conn->connect_error) {
    echo "DB GAGAL: " . $conn->connect_error;
} else {
    echo "DB KONEK OK<br>";
    $r = $conn->query("SHOW TABLES");
    echo "Tables: ";
    while($row = $r->fetch_array()) echo $row[0] . " ";
}