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<?php $arr = array(array('a', 0),array('b', 1),array('c', 0),array('d', 1)); $assoc_arr = array_reduce($arr, function ($result, $item) { $result[$item[0]] = $item; return $result; }, array()); var_dump($assoc_arr);
Output for git.master, git.master_jit, rfc.property-hooks
array(4) { ["a"]=> array(2) { [0]=> string(1) "a" [1]=> int(0) } ["b"]=> array(2) { [0]=> string(1) "b" [1]=> int(1) } ["c"]=> array(2) { [0]=> string(1) "c" [1]=> int(0) } ["d"]=> array(2) { [0]=> string(1) "d" [1]=> int(1) } }

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