Referenzbibliothek
Datenvalidierung Cheatsheet
Telefon, Luhn, IBAN, VAT, GTIN und ISO-Länderdaten.
Phone prefix
Referenz: Normalize common international phone input.
+1 415 555 0100 Luhn sample
Referenz: Check digit pattern for card-like identifiers.
4242 4242 4242 4242 IBAN sample
Referenz: Validate country prefix and checksum.
DE89370400440532013000 GTIN sample
Referenz: EAN/GTIN check digit example.
4006381333931