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<?php declare(strict_types=1); /** * @param array $elements * @param array $extra * * @return Generator */ function gen(array $elements, array $extra = []): \Generator { foreach ($elements as $i => $head) { foreach (gen(array_slice($elements, $i + 1), $extra) as $tail) { yield array_merge([$head], $tail); } } yield $extra; } foreach (gen(['O', 'U', 'W', 'P'], ['template']) as $path) { echo implode(' / ', $path), "\n"; }
Output for git.master, git.master_jit, rfc.property-hooks
O / U / W / P / template O / U / W / template O / U / P / template O / U / template O / W / P / template O / W / template O / P / template O / template U / W / P / template U / W / template U / P / template U / template W / P / template W / template P / template template

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