用php生成数字签名

我曾经用Ruby生成数字签名，如下所示：

def generate_signature
  data = "Databeingpassed"
  secret_key = "Somesecretkey" 
  digest = OpenSSL::Digest::Digest.new('sha256')
  Base64.encode64(OpenSSL::HMAC.digest(digest, secret_key, data)).strip
end

Output: 2XBK7UXA9oDsfJj1TBE2maptpB6i1MJ4uadY1AXlQOQ=

如何使用Php实现同样的效果，我在Php中使用了以下代码，但是输出是不同的

function generate_signature() {
  $data = "Databeingpassed"
  $secret_key = "Somesecretkey" 

  $message = hash('sha256', $secret_key, $data);
  return base64_encode($message);
}

Output: hgy/KMG3zTSgjUrzA/3nNvN+vApna6A7JqtZwx+r9Ng=

---

有什么想法吗？

我找到了一种方法，以防有人需要：

function generate_signature() {
  $data = "Databeingpassed"
  $secret_key = "Somesecretkey" 

  return base64_encode(hash_hmac('sha256', $data, $secret_key, true));
}

输出：

2XBK7UXA9oDsfJj1TBE2maptpB6i1MJ4uadY1AXlQOQ=