key

reactphp/promise

Supported Versions: PHP 4, PHP 5, PHP 7, PHP 8

Fetch a key from an array

<?php key(array|object $array): int|string|null

<?php     private function drain(): void

    {

        for ($i = \key($this->queue); isset($this->queue[$i]); $i++) {

            $cancellable = $this->queue[$i];



            $exception = null;

src/Internal/CancellationQueue.php

<?php     private function drain(): void

    {

        for ($i = \key($this->queue); isset($this->queue[$i]); $i++) {

            try {

                ($this->queue[$i])();

            } finally {

src/Internal/Queue.php