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<?php $arr[] = ["_source" => ["block" => ["Kurud"], "district" => ["Dhamtari"], "state" => ["Chhattisgarh"]]]; $arr[] = ["_source" => ["block" => ["North-Bangeluru"], "district" => ["Bangalore"], "state" => ["Karnataka"]]]; $keys = array_keys($arr[0]["_source"]); $res[] = $keys; foreach($arr as $e) { $temp = []; foreach($keys as $k) $temp[] = $e["_source"][$k][0]; $res[] = $temp; } print_r($res);
Output for git.master_jit, git.master, rfc.property-hooks
Array ( [0] => Array ( [0] => block [1] => district [2] => state ) [1] => Array ( [0] => Kurud [1] => Dhamtari [2] => Chhattisgarh ) [2] => Array ( [0] => North-Bangeluru [1] => Bangalore [2] => Karnataka ) )

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