__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 Set, which is "Set"

public function __toString(): string;

Returns

• string - The string "Set".

Examples

The string version of a Set is always "Set":

$s = Set {1, 2, 3};
echo $s->__toString()."\n";

$s2 = Set {'a', 'b', 'c'};
echo $s2->__toString()."\n";

$s3 = Set {};
echo $s3->__toString()."\n";