MINI

files >> C:/xampp/htdocs/ktpel/config/database.php
 <?php

$cfg = [
    'host'     => '127.0.0.1',
    'port'     => '1521',
    'service'  => 'siakdb',
    'username' => 'siakoff',
    'password' => 'bobbytgs13',
    'charset'  => 'AL32UTF8'
];

function oracle_connect(): array
{
    global $cfg;

    static $conn = null;

    if ($conn !== null) {
        return [$conn, null];
    }

    $dsn = "(DESCRIPTION="
         . "(ADDRESS="
         . "(PROTOCOL=TCP)"
         . "(HOST={$cfg['host']})"
         . "(PORT={$cfg['port']})"
         . ")"
         . "(CONNECT_DATA="
         . "(SERVICE_NAME={$cfg['service']})"
         . ")"
         . ")";

    $conn = @oci_connect(
        $cfg['username'],
        $cfg['password'],
        $dsn,
        $cfg['charset']
    );

    if (!$conn) {
        $e = oci_error();

        return [
            null,
            $e['message'] ?? 'Koneksi Oracle gagal'
        ];
    }

    return [$conn, null];
}