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<?php $arr[123][] = 'first'; $arr[256][] = 'sec'; $arr[123][] = 'third'; $arr[555][] = 'four'; $arr[256][] = 'five'; var_dump($arr);
Output for git.master, git.master_jit, rfc.property-hooks
array(3) { [123]=> array(2) { [0]=> string(5) "first" [1]=> string(5) "third" } [256]=> array(2) { [0]=> string(3) "sec" [1]=> string(4) "five" } [555]=> array(1) { [0]=> string(4) "four" } }

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