<?php $regex = '/^[a-z0-9!#$%&\'*+\/=?^_`{|}~-]+(?:\.[a-z0-9!#$%&\'*+\/=?^_`{|}~-]+)*@'; $email = 'uni-direct@uws.ac.uk'; preg_match_all($regex, $email, $matches); var_dump($matches);
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