/home/smartonegroup/www/system/install/db_import.php
<?php
require 'base.php';
require '../system/config.php';

$mysqli = new mysqli(DB_HOST, DB_USER, DB_PASSWORD, DB_NAME);

// $link = mysqli_connect(DB_HOST, DB_USER, DB_PASSWORD, DB_NAME);

$c_mysqli = false;
$c_pdo = false;

if (mysqli_connect_errno()) {
    try {
        $dbh = new pdo(
            'mysql:host=' . DB_HOST . ';dbname=' . DB_NAME,
            DB_USER,
            DB_PASSWORD,
            [PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION]
        );

        $c_pdo = true;
    } catch (PDOException $ex) {
    }
} else {
    $c_mysqli = true;
}

$sql = file_get_contents('primary.sql');
$sql = str_replace(
    '---PurchaseKeyPlaceHolder---',
    $_SESSION['purchase_key'],
    $sql
);

if ($c_mysqli) {
    $mysqli->multi_query($sql);
} elseif ($c_pdo) {
    $qr = $dbh->exec($sql);
} else {
    echo 'Failed';
    exit();
}

echo '1';