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<?php $arr =[ 0 => [ "id" => 4, "manufacturer" => "Siemens", ], 1 => [ "id" => 5, "manufacturer" => "Dell" ] ]; $res = array_combine(array_column($arr, "id"), array_column($arr, "manufacturer")); Var_dump($res);
Output for git.master, git.master_jit, rfc.property-hooks
array(2) { [4]=> string(7) "Siemens" [5]=> string(4) "Dell" }

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