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<?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', 'secret key');

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