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<?php $arr1 = [ [ "id"=>"3", "weight"=>"20", "percentage"=>"80", ], [ "id"=>"1", "weight"=>"50", "percentage"=>"80", ], [ "id"=>"2", "weight"=>"40", "percentage"=>"80", ] ]; $arr2 = [ [ "id"=>"1", "stock"=>"9539.00" ], [ "id"=>"2", "stock"=>"9468.00" ], [ "id"=>"3", "stock"=>"9295.00" ] ]; $keys = []; foreach ($arr2 as $item) $keys[$item['id']] = $item['stock']; $newArr = array_map(function($item) use($keys){ $item['stock'] = $keys[$item['id']]; return $item; }, $arr1); var_dump($newArr);

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