table of contents
| Algorithm::CheckDigits::M10_005(3pm) | User Contributed Perl Documentation | Algorithm::CheckDigits::M10_005(3pm) |
NAME¶
CheckDigits::M10_005 - compute check digits for Deutsche Post Identcode/Leitcode (DE)
SYNOPSIS¶
use Algorithm::CheckDigits;
$ic = CheckDigits('identcode_dp');
if ($ic->is_valid('21.802 580.906 6')) {
# do something
}
$cn = $ic->complete('21.802 580.906');
# $cn = '21.802 580.9066'
$cd = $ic->checkdigit('21.802 580.906 6');
# $cd = '6'
$bn = $ic->basenumber('21.802 580.906 6');
# $bn = '21.802 580.906'
DESCRIPTION¶
ALGORITHM¶
- 1.
- Beginning left all numbers are weighted alternatively 4 and 9.
- 2.
- The sum of all products is computed.
- 3.
- The sum of step 3 ist taken modulo 10.
- 4.
- The check digit is the difference between 10 and the number from step 3.
METHODS¶
- is_valid($number)
- Returns true only if $number consists solely of
numbers and the last digit is a valid check digit according to the
algorithm given above.
Returns false otherwise,
- complete($number)
- The check digit for $number is computed and
concatenated to the end of $number.
Returns the complete number with check digit or '' if $number does not consist solely of digits and spaces.
- basenumber($number)
- Returns the basenumber of $number if
$number has a valid check digit.
Return '' otherwise.
- checkdigit($number)
- Returns the checkdigit of $number if
$number has a valid check digit.
Return '' otherwise.
EXPORT¶
None by default.
AUTHOR¶
Mathias Weidner, "<mamawe@cpan.org>"
SEE ALSO¶
perl, CheckDigits, www.pruefziffernberechnung.de.
| 2021-11-19 | perl v5.32.1 |