Count

:::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 2; a Pair always has two values

public function count(): int;

Returns

• int - 2

Examples

This shows that a Pair always has a count of 2:

$p = Pair {'foo', -1.5};
\var_dump($p->count());

$p = Pair {null, null};
\var_dump($p->count());