Hphp Set Property - Hhvm

:::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. :::

hphp_set_property() - Used by ReflectionProperty to set the value of a property on an instance of a class

Hack

function hphp_set_property(
  object $obj,
  string $cls = '',
  string $prop,
  mixed $value,
): void;

Parameters

object $obj - The object to set the property on.
string $cls = '' - The name of the class that the property is accessible in or null to only set a public property.
string $prop - The name of the property.
mixed $value - The value to set the property to.

Returns

void