Syntax

stat = ISISBN(isbn)

Arguments

stat: integer

isbn: text

Meaning

stat will be 1 if isbn is a valid ISBN code (either 10 or 13-digit), and 0 if it is not.

Example 1

stat = ISISBN('0-07-027988-8')

Result

stat is 1.

Example 2

stat = ISISBN('12345')

Result

stat is 0.

Example 3

stat = ISISBN('978-0-07-027988-9')

Result

stat is 1.