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<?php $re = '/^(?:.*/\.)(?:.*\.\.)(?:/)(?:.*//)(?:.*@\{)(?:@$)(?:.*\\)[^\000-\037\177 ~^:?*[]+/[^\000-\037\177 ~^:?*[]+(?<!\.lock)(?<!/)(?<!\.)$/'; var_dump(preg_match($re, ''));

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