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<?php $foo = [ 'a' => '1', 'b' => '1', 'c' => '2', ]; $foo2 = array_combine($foo, $foo); var_dump($foo2); $foo3 = array_map(function($v) { return '#' . $v; }, $foo2); var_dump($foo3); $foo4 = array_fill_keys($foo3, $foo); var_dump($foo4);
Output for git.master, git.master_jit, rfc.property-hooks
array(2) { [1]=> string(1) "1" [2]=> string(1) "2" } array(2) { [1]=> string(2) "#1" [2]=> string(2) "#2" } array(2) { ["#1"]=> array(3) { ["a"]=> string(1) "1" ["b"]=> string(1) "1" ["c"]=> string(1) "2" } ["#2"]=> array(3) { ["a"]=> string(1) "1" ["b"]=> string(1) "1" ["c"]=> string(1) "2" } }

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