ToImmMap

:::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. :::

Returns an immutable, integer-keyed map (ImmMap) based on the elements of the current Pair

public function toImmMap(): ImmMap<int, mixed>;

The keys are 0 and 1.

Returns

• ImmMap<int,mixed> - an ImmMap with the values of the current Pair.

Examples

$p = Pair {'foo', -1.5};

$imm_map = $p->toImmMap();

\var_dump($imm_map is \HH\ImmMap<_, _>);
\var_dump($imm_map);