MySQL에 연결할 때 PHP에서 SQL 파일 가져오기 오류를 해결하려면 어떻게 해야 합니까?

// MySQL server hostname
$mysql_host = 'localhost';
// MySQL username
$mysql_user = 'root';
// MySQL password
$mysql_pass = '';
// Database name to import into
$mysql_db_import = 'import_database';

$mysqli = new mysqli($mysql_host, $mysql_user, $mysql_pass, $mysql_db_import);

if ($mysqli->connect_errno) {
    die("MySQL Connection error: {$mysqli->connect_errno}");
}

// Read SQL file's contents
$sql_file = file_get_contents('dbbackupmember.sql');

// Execute SQL queries
$success = $mysqli->multi_query($sql_file);

// Check for errors
if (!$success) {
    die("Error import SQL file: {$mysqli->error}");
}

echo "SQL file successfully imported into {$mysql_db_import} database.";

$mysqli->close();
?>