将HMAC哈希从Python转换为PHP

import hmac
import hashlib

def generate_hmac(key, message):
    hmac_hash = hmac.new(key.encode(), message.encode(), hashlib.sha256)
    return hmac_hash.hexdigest()

key = "your_key"
message = "your_message"
hmac_hash = generate_hmac(key, message)
print(hmac_hash)

function generate_hmac($key, $message) {
    $hmac_hash = hash_hmac('sha256', $message, $key);
    return $hmac_hash;
}

$key = "your_key";
$message = "your_message";
$hmac_hash = generate_hmac($key, $message);
echo $hmac_hash;