<?php $email = 'fuck-docomo.@gm\ail'; echo (preg_match('/^[a-zA-Z0-9.!#$%&’*+\/=?^_`{|}~-]+@[a-zA-Z0-9-]+(?:\\.[a-zA-Z0-9-]+)*$/', $email)) ? 'match' : 'mismatch';
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