解码 html 电子邮件正文 Gmail api

Question

使用 Gmail api 时解码 html 电子邮件正文的正确方法是什么。

// Expected: "<p><strong>Test test</strong></p>"
$message = $gmail->users_messages->get('me', $messageId);
$payload = $message->getPayload();
$body = $payload->getBody()->data;
Log::info('Raw body:', [$body]); // "PHA-PHN0cm9uZz5UZXN0IHRlc3Q8L3N0cm9uZz48L3A-"
Log::info('Base64 decoded body:', [base64_decode($body)]); // NO OUTPUT
Log::info('UTF8 encoded body:', [utf8_encode($body)]); // "PHA-PHN0cm9uZz5UZXN0IHRlc3Q8L3N0cm9uZz48L3A-"
Log::info('Quote print decoded:', [quoted_printable_decode($body)]); // "PHA-PHN0cm9uZz5UZXN0IHRlc3Q8L3N0cm9uZz48L3A-"
Log::info('Quote print decoded:', [quoted_printable_decode(base64_decode($body)))]); // NO OUTPUT

Answer 1

想通了。它需要一些额外的技巧，特别是 base64url_decode 函数found here

protected function base64url_decode($data) { 
        return base64_decode(str_pad(strtr($data, '-_', '+/'), strlen($data) % 4, '=', STR_PAD_RIGHT)); 

}

public function getMessage($messageId) {
    // ...
    $message = $gmail->users_messages->get('me', $messageId);
    $payload = $message->getPayload();
    $body = $payload->getBody()->data;
    // decoded body
    return $decodedBody= quoted_printable_decode($this->base64url_decode($rawBody));
}