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Algorithm::CheckDigits::M11_008.3pm
Langue: en
Version: 2008-05-17 (debian - 07/07/09)
Section: 3 (Bibliothèques de fonctions)
NAME
CheckDigits::M11_008 - compute check digits for VAT Registration Number (DK)SYNOPSIS
use Algorithm::CheckDigits; $ustid = CheckDigits('ustid_dk'); if ($ustid->is_valid('13585628')) { # do something } $cn = $ustid->complete('1358562'); # $cn = '13585628' $cd = $ustid->checkdigit('13585628'); # $cd = '8' $bn = $ustid->basenumber('13585628'); # $bn = '1358562';
DESCRIPTION
ALGORITHM
- 1.
- Beginning left every digit is weighted with 2, 7, 6, 5, 4, 3, 2, 1
- 2.
- The weighted digits are added.
- 3.
- The sum from step 2 is taken modulo 11.
- 4.
- The number is valid if the sum from step 3 is zero (0).
METHODS
- is_valid($number)
- Returns true only if $number consists solely of numbers and hyphens and the two digits in the middle are valid check digits according to the algorithm given above.
Returns false otherwise,
- complete($number)
- The check digit for $number is computed and inserted into the middle of $number.
Returns the complete number with check digit or '' if $number does not consist solely of digits, hyphens and spaces.
- basenumber($number)
- Returns the basenumber of $number if $number has a valid check digit.
Return '' otherwise.
- checkdigit($number)
- Returns '' if $number is valid.
Return undef otherwise.
EXPORT
None by default.AUTHOR
Mathias Weidner, <mathias@weidner.in-bad-schmiedeberg.de>SEE ALSO
perl, CheckDigits, www.pruefziffernberechnung.de,Contenus ©2006-2024 Benjamin Poulain
Design ©2006-2024 Maxime Vantorre