Mathias Weidner > Algorithm-CheckDigits-v1.2.1 > Algorithm::CheckDigits::M23_001

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Module Version: 0.53   Source   Latest Release: Algorithm-CheckDigits-v1.3.0

# NAME

CheckDigits::M23_001 - compute check digits for DNI (ES)

# 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.

None by default.

# AUTHOR

Mathias Weidner, `<mamawe@cpan.org>`