Question 1

How do I validate an SNS message in PHP?

Accepted Answer

Use `Message::fromRawPostData()` to create a message object from raw POST data, then instantiate `MessageValidator` and call `isValid()` or `validate()`. Ensure PHP 8.1+ and OpenSSL are available, as per the README.

Question 2

AWS SNS validator PHP vs using the full SDK: which is better?

Accepted Answer

The standalone validator is lighter and perfect if you only need to verify incoming SNS messages without other AWS integrations. The full SDK offers broader functionality but adds more dependencies and complexity.

Question 3

How to handle SNS subscription confirmation in PHP?

Accepted Answer

After validating the message with `MessageValidator`, check if `$message['Type']` is 'SubscriptionConfirmation' and use `file_get_contents($message['SubscribeURL'])` to confirm, as shown in the README examples.

Question 4

What causes InvalidSnsMessageException in AWS SNS validator?

Accepted Answer

This exception is thrown when validation fails, such as due to invalid signatures, tampered data, or incorrect SigningCertURL. The README emphasizes checking these elements to ensure message integrity.

Question 5

Can I test SNS webhooks locally with this library?

Accepted Answer

Yes, the README recommends tools like ngrok with PHP's built-in webserver. A linked blog post provides techniques, though code samples may need adaptation for this standalone version.

Question 6

Does the AWS SNS message validator support PHP 8.2?

Accepted Answer

Yes, since it requires PHP 8.1+, it should be compatible with PHP 8.2. Check the Packagist page for the latest version and specific compatibility details, as noted in the installation section.

aws-php-sns-message-validator

What is aws-php-sns-message-validator?

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