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已解決 統(tǒng)計(jì)會(huì)員訂單金額，為什么沒有數(shù)據(jù)輸出
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統(tǒng)計(jì)會(huì)員訂單金額，沒有數(shù)據(jù)輸出。語句為：{$ci->db->select_sum('order_price')->where('buy_uid',1)->where('order_status',3)->get('1_order')->row_array()[0]}
<?php $c=$ci->db->select_sum('order_price')->where('buy_uid',1)->where('order_status',3)->get('1_order')->row_array(); echo $c.order_price;?><?php $c=$ci->db->select_sum('order_price')->where('buy_uid',1)->where('order_status',3)->get('1_order')->row_array(); echo $c["order_price"];?>應(yīng)該這樣寫