CheckDigits::MXX_001 - compute check digits for german Personalausweis (pa_de) or ABA routing numbers (aba_rn)
use Algorithm::CheckDigits; $pa = CheckDigits('pa_de'); if ($pa->is_valid('2406055684D<<6810203<0705109<6')) { # do something } if ($pa->is_valid('2406055684') { # do_something } $cn = $pa->complete('240605568_D<<681020_<070510_<_'); # $cn = '2406055684D<<6810203<0705109<6' $cd = $pa->checkdigit('2406055684D<<6810203<0705109<6'); # $cd = '6' $bn = $pa->basenumber('2406055684D<<6810203<0705109<6'); # $bn = '240605568_D<<681020_<070510_<_' $aba = CheckDigits('aba_rn'); if ($aba->is_valid('789456124')) { # do something }
Beginning left all digits are weighted with 7,3,1,7,3,1,... for pa_de or 3,7,1,3,7,1,3,7,1 for aba_rn.
The sum of those products is computed.
For pa_de the checksum is the last digit of the sum from step 2 (modulo 10).
For aba_rn the checksum is the difference of the sum from step 2 to the next multiple of 10.
For the german Personalausweis step 1 to 3 is performed for every part of the number and for all 3 parts including the particular checkdigit to compute the total checksum.
If the number solely consists of digits, the checksum is just computed once according to algorithm given above.
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>
Aaron W. West pointed me to a fault in the computing of the check digit. Jim Hickstein made me aware of the ABA routing numbers.
perl, CheckDigits, www.pruefziffernberechnung.de, http://answers.google.com/answers/threadview/id/43619.html, http://www.brainjar.com/js/validation/
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.