Function Hook_fields_isbn->is_valid_isbn
Definitions
sources/hooks/systems/fields/isbn.php
- Check if a provided code is valid ISBN-10 or ISBN-13.
- Visibility: protected
- Is abstract?: No
- Is static?: No
- Is final?: No
- Return: bool
Parameters
| Name | Type | Default | Set | Range | Description |
|---|---|---|---|---|---|
| $isbn | string | required parameter | N/A | N/A | The ISBN code to check |
Return
- Whether the ISBN code is valid
- Type: boolean
- Set: N/A
- Range: N/A