PHP - Code Example Request - Sigv4 signing

[beqqrry-aws]

Customer would like a PHP example on how to using Sigv4 signing as per this page:

http://docs.aws.amazon.com/en_us/general/latest/gr/sigv4_signing.html

It appears only Python has examples relating to this topic.

Created from Documentation Feedback ticket:

I am trying to sign a request to an API using the PHP language natively. Try using the AWS SDK but it doesn't work either.

Make Better:
It would be very helpful to give an example that if it works for PHP, I have looked for an example on the internet and there is hardly any clear one.