__toString

:::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 the string version of the current ImmMap, which is "ImmMap"

public function __toString(): string;

Returns

• string - The string "ImmMap".

Examples

The string version of an ImmMap is always "ImmMap":

$im = ImmMap {'a' => 1, 'b' => 2, 'c' => 3};
echo $im->__toString()."\n";

$im3 = ImmMap {};
echo $im3->__toString()."\n";