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<?php $email = 'johnsnow@ヒキワリ.ナットウ.com'; //$email = str_replace('@-', '@', str_replace('xn--', '', idn_to_ascii($email))); echo $email . "\n"; //if (filter_var($email, FILTER_VALIDATE_EMAIL)) { // echo 'valid'; //} else { // echo 'not valid'; //} $expression = '^[a-z0-9_-]+(?:[a-z0-9._%+-]+)*@(?:[a-z0-9](?:[a-z0-9-]*[a-z0-9])?\\.)+(?:[A-Z]{2}|com)$'; echo (mb_eregi($expression, $email) !== false) ? 'valid' : 'not valid';
Output for git.master, git.master_jit, rfc.property-hooks
johnsnow@ヒキワリ.ナットウ.com not valid

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