$reg = "/[a-zA-Z0-9@\.]+\t{2}[a-zA-Z0-9]+\t{2}[a-zA-Z]+\n/is";$str = "a123.@\t\taa21\t\taaa\n";preg_match_all($reg,$str,$tmp);?>
/^[a-z0-9@\.]\t{2}[a-z0-9]\t{2}[[a-z]$/is
