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<?php $obj_array=(object)[ ['label'=>'1509521006','value'=>'12.324711'], ['label'=>'1509531448','value'=>'12.700929'] ]; $your_json=json_encode($obj_array); // now convert to index the subarrays... echo json_encode(array_map('array_values',json_decode($your_json,true))); //var_export(json_decode($json,true));

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