$value) { echo $key . " === " . $value . "
"; }*/ //echo $_SERVER["HTTP_X_API_KEY"]; $string = '{"user":"marc", "auth":true}'; $secret = "281361f952279bd9530734c67ed04aed2756f0fe00cb998cd6c28324f491484c"; echo "Hash: " . hash_hmac("sha256", $string, $secret); echo "Decode: " . hash_equals($string, $secret);