> For clean Markdown content of this page, append .md to this URL. For the complete documentation index, see https://buildwithfern.com/learn/llms.txt. ## 0.14.2 **`(fix):`** This updates the PHP generator to better support undiscriminated unions that define one or more `optional` types. With this, the generator unwraps each of the optional types, and includes a `|null` variant (e.g. `array|Metadata|null`).