Uhm, you only have to account for the possibility of numbers less than 9 characters being entered? Noone enters 10 digits? Noone enters letters or spaces? If the only possible error is to not have enough digits, no regex is required. Just do: 
    $number = sprintf "%09d" => $number;

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Abigail

In reply to Re: adding characters via a regular expression by Abigail-II
in thread adding characters via a regular expression by jwking

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