Using your online calculator at http://hash.online-convert.com/sha256-generator I get ea645ae07e04289f3fe14c81af54f7da9cae1114fe2bb9efbb6b383ef276434b which is the same as the output from your script. Perhaps you are not using the online generator correctly? Or at least not in the same way as sha256_hex?

In reply to Re: Problems with HMAC SHA-256 by hippo
in thread Problems with HMAC SHA-256 by agnome

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