如何解压来自MS SQL VarBinary的数据并另存为文件？(在PHP中)

$servername = "数据库服务器地址";
$database = "数据库名称";
$username = "用户名";
$password = "密码";

try {
    $conn = new PDO("sqlsrv:Server=$servername;Database=$database", $username, $password);
    $conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
    echo "连接成功";
} catch (PDOException $e) {
    echo "连接失败: " . $e->getMessage();
}

$recordId = 1; // 要查询的记录ID

$stmt = $conn->prepare("SELECT binary_data FROM table_name WHERE id = :recordId");
$stmt->bindParam(':recordId', $recordId);
$stmt->execute();

$row = $stmt->fetch(PDO::FETCH_ASSOC);
$binaryData = $row['binary_data'];

$filePath = "保存文件的路径";
file_put_contents($filePath, gzuncompress($binaryData));