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<?php $array = array( '' => 'test', '1' => 'test1', '5' => 'test5', '2' => 'test2', '10' => 'test10' ); var_dump($array);
Output for git.master, git.master_jit, rfc.property-hooks
array(5) { [""]=> string(4) "test" [1]=> string(5) "test1" [5]=> string(5) "test5" [2]=> string(5) "test2" [10]=> string(6) "test10" }

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