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<?php $email = 'http://ヒキワリ.ナットウ.ニホン'; $email = idn_to_ascii($email); echo $email . "\n"; $dictionary = array('aero', 'arpa', 'asia', 'biz', 'cat', 'com', 'coop', 'edu', 'gov', 'info', 'int', 'jobs', 'mil', 'mobi', 'museum', 'name', 'net', 'org', 'pro', 'tel', 'travel'); $expression = '^[a-z0-9_-]+(?:[a-z0-9._%+-]+)*@(?:[a-z0-9](?:[a-z0-9-]*[a-z0-9])?\\.)+(?:[A-Z]{2}|' . implode('|', $dictionary) . ')$'; echo mb_eregi($expression, $email) !== false; ?>

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