match (true) { strlen($value) === 0 => 'Please enter an email address.', ! filter_var($value, FILTER_VALIDATE_EMAIL) => 'Please enter a valid email address.', default => null, }, hint: 'We will never share your email address with anyone else.', transform: fn ($value) => strtolower($value), ); var_dump($email); echo str_repeat(PHP_EOL, 5);