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<?php $pattern = '/^[a-zA-Z0-9!#$%&\'*+\\/=?^_`{|}~-]+(?:\.[a-zA-Z0-9!#$%&\'*+\\/=?^_`{|}~-]+)*@(?:[a-zA-Z0-9](?:[a-zA-Z0-9-]*[a-zA-Z0-9])?\.)+[a-zA-Z0-9](?:[a-zA-Z0-9-]*[a-zA-Z0-9])?$/'; preg_match('/^(.*<?)(.*)@(.*?)(>?)$/', 'philipptschiönder@dörler.co.at', $matches); var_dump($matches); $value = $matches[1] . idn_to_ascii($matches[2]) . '@' . idn_to_ascii($domain) . $matches[4]; $valid = preg_match($this->pattern, $value) || $this->allowName && preg_match($this->fullPattern, $value); echo $valid; ?>

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