XHPChild

:::info[Note] This is a point-in-time snapshot of the API documentation from January 2026. Going forward, we will not be maintaining a public copy of these references, and recommend users to refer to the built-in signature helpers available in the Hack LSP instead for complete and up-to-date information. :::

XHPChild is the base type of values that can be children of XHP elements

Most primitive types implement XHPChild: string, int, float, and array.

Classes that implement XHPChild must do so by implementing the XHPChildClass subinterface.

Interface Synopsis

interface XHPChild {...}