Online PHP editor | output for ZQ9Fn

<?php $request = [ 'sso_id' => 'test', 'phone' => 'test', ]; ksort($request); echo http_build_query($request); echo ' '; echo hash_hmac('sha256', http_build_query($request), ''); echo ' '; $request = [ 'sso_id' => 'test', 'snils' => 'test', 'phone' => 'test', 'email' => 'email', ]; ksort($request); echo http_build_query($request); echo ' '; echo hash_hmac('sha256', http_build_query($request), ''); echo ' '; echo hash_hmac('sha256', 'email=4654%40mail.ru&phone=9999999999&snils=216-556-489%2083&sso_id=DIT2012%40mos.ruUUID12345', ''); $request = [ 'sso_id' => 'DIT2012@mos.ruUUID12345', 'snils' => '216-556-489 +83', 'phone' => '9999999999', 'email' => '4654@mail.ru', ]; ksort($request); echo http_build_query($request); echo ' '; echo hash_hmac('sha256', http_build_query($request), '');