SYNOPSIS
use Algorithm::CheckDigits;
$dni = CheckDigits('dni_es');
if ($dni->is_valid('54362315K')) {
# do something
}
$cn = $dni->complete('54362315');
# $cn = '54362315K'
$cd = $dni->checkdigit('54362315K');
# $cd = 'K'
$bn = $dni->basenumber('54362315K');
# $bn = '54362315'
DESCRIPTION
ALGORITHM
- 1.
- The checkdigit is the whole number taken modulo 23 and coded according to a keytable.
METHODS
- is_valid($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.