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__construct

hphp/hack/manual/apis/Classes/IntervalTimer/0.__construct.md

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:::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. :::

Create a new interval timer

Hack
public function __construct(
  double $interval,
  float $initial,
  mixed $callback,
);

Parameters

  • double $interval - frequency in seconds of timer interrupts.
  • float $initial
  • mixed $callback
<!-- HHAPIDOC -->