CheckDigits::M09_001(3User Contributed Perl DocumentatiCheckDigits::M09_001(3)NAME
CheckDigits::M09_001 - compute check digits for Euro notes
SYNOPSIS
use Algorithm::CheckDigits;
$euro = CheckDigits('euronote');
if ($euro->is_valid('X07738250357')) {
# do something
}
$cn = $euro->complete('X0773825035'); # $cn = 'X07738250357'
$cd = $euro->checkdigit('X07738250357'); # $cd = '7'
$bn = $euro->basenumber('X07738250357'); # $bn = 'X0773825035'
DESCRIPTION
ALGORITHM
1. Letters are replaced with their position in the alphabet ('A' = 1,
...).
2. The total of the digits of all numbers is computed.
3. This sum is taken modulo 9.
4. The check digit is the difference between 8 and the number of step
3.
To validate the last digit of the total of the digits of all numbers
inclusive check digit must be 8.
METHODS
is_valid($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 $number does
not consist solely of digits.
basenumber($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, <mathias@weidner.in-bad-schmiedeberg.de>
SEE ALSO
perl, CheckDigits, www.pruefziffernberechnung.de.
perl v5.14.1 2009-11-20 CheckDigits::M09_001(3)
