Algorithm::CheckDigits::M07_001 - compute check digits modulo 7 method 1 River stage one • 3 direct dependents • 5 total dependents

ALGORITHM 1. All digits are added. 2. All digits at even positions are added. 3. The sum of step 1 and 2 is taken modulo 7. 4. This is the check digit. METHODS is_valid($number) Returns true only if $number consists solely of numbers and the last dig...

MAMAWE/Algorithm-CheckDigits-v1.3.2 - 16 May 2016 13:08:12 GMT

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