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<?php $arr = [ 0 => (object) ["class" => 1], 1 => (object) ["class" => 10], ]; $arr1 = [ 0 => (object) ["fee_amount" => 8285], 1 => (object) ["fee_amount" => 300], ]; function multiArrayCombine($array1, $array2) { $temp = array_map(null, $array1, $array2); // switch index wise data on either side foreach ($temp as $key => &$value) { // & to make changes at address of variable $value = json_decode(json_encode($value), true); // convert object to array $value = array_merge(...$value); // removing initial index and merge internally } return json_decode(json_encode($temp)); // convert back to object form } $arr = multiArrayCombine($arr, $arr1); // $arr = array_map(null,...$arr); print_r($arr);

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