CheckDigits::M11_004 - compute check digits for CPF (BR), Título Eleitoral (BR)
use Algorithm::CheckDigits; $cpf = CheckDigits('cpf'); if ($cpf->is_valid('043.033.407-90')) { # do something } $cn = $cpf->complete('043.033.407-'); # $cn = '043.033.407-90' $cd = $cpf->checkdigit('043.033.407-90'); # $cd = '90' $bn = $cpf->basenumber('043.033.407-90'); # $bn = '043.033.407-'
From left to right all digits are multiplied with their position in the sequence.
The sum of all products is computed.
The sum of step 2 is taken modulo 11.
a) If the result is 0 or 1 the checkdigit is 0
b) otherwise the checkdigit is 11 minus the result.
The first checkdigit is appended to the number and step 1 to 3 are repeated.
Returns true only if $number consists solely of numbers and the last digit is a valid check digit according to the algorithm given above.
$number
Returns false otherwise,
The check digit for $number is computed and concatenated to the end of $number.
Returns the complete number with check digit or '' if $number does not consist solely of digits and spaces.
Returns the basenumber of $number if $number has a valid check digit.
Return '' otherwise.
Returns the checkdigit of $number if $number has a valid check digit.
None by default.
Mathias Weidner, <mamawe@cpan.org>
<mamawe@cpan.org>
perl, CheckDigits, www.pruefziffernberechnung.de.
To install Algorithm::CheckDigits, copy and paste the appropriate command in to your terminal.
cpanm
cpanm Algorithm::CheckDigits
CPAN shell
perl -MCPAN -e shell install Algorithm::CheckDigits
For more information on module installation, please visit the detailed CPAN module installation guide.