CheckDigits::M11_015 - compute check digits for ESR5 (CH)
use Algorithm::CheckDigits; $ustid = CheckDigits('esr5_ch'); if ($ustid->is_valid('050001000012000 241170032660178 10304')) { # do something } $cn = $ustid->complete('0001000012000 241170032660178 10304'); # $cn = '050001000012000 241170032660178 10304' $cd = $ustid->checkdigit('0001000012000 241170032660178 10304'); # $cd = '05' $bn = $ustid->basenumber('050001000012000 241170032660178 10304'); # $bn = '0001000012000 241170032660178 10304';
Beginning right all digits are weighted with the repeating sequence 2, 3, 4, 5, 6, 7.
The weighted digits are added.
The sum from step 2 is taken modulo 11.
The checkdigit is 11 minus the sum from step 3. If the difference is 11, the checkdigit is 00.
Returns true only if $number consists solely of numbers (with or without space between them) and the first two digits are valid check digits according to the algorithm given above.
$number
Returns false otherwise,
The check digit for $number is computed and inserted before the $number.
Returns the complete number with check digit or '' if $number does not consist solely of digits, spaces.
Returns the basenumber of $number if $number has a valid check digit.
Return '' otherwise.
Returns the check digits of $number if $number has valid check digits.
None by default.
Mathias Weidner, <mamawe@cpan.org>
<mamawe@cpan.org>
perl, CheckDigits, http://www.pruefziffernberechnung.de/E/Einzahlungsschein-CH.shtml (german), http://www.sic.ch/de/dl_tkicch_dta.pdf, page 52 (german)
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.