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<?php declare(strict_types = 1); class BinarySearch { /** * @param mixed[] $items */ public function __invoke(array $items): int { for ($start = 0, $end = count($items); $i = $start + (int) (($end - $start) / 2), $i < $end; ) { // do something here break; } return $i; } } $binarySearch = new BinarySearch(); var_dump($binarySearch([])); var_dump($binarySearch([0, 1, 2, 3])); var_dump($binarySearch([0, 1, 2, 3, 4, 5, 6])); var_dump($binarySearch([0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10]));
Output for git.master, git.master_jit, rfc.property-hooks
int(0) int(2) int(3) int(5)

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