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                > ## 延遲預載入:load()方法 > 僅針對多個數據的查詢,延遲預載入明顯優化性能 ### 當返回的結果集是數據集對象時 ``` $list = User::all([1,2,3]); // 延遲預載入 $list->load('cards'); foreach($list as $user){ // 獲取用戶關聯的card模型數據 dump($user->cards); } ``` ### 當返回的結果集是數組時:使用助手函數load_relation() ``` $list = User::all([1,2,3]); // 延遲預載入 $list = load_relation($list,'cards'); foreach($list as $user){ // 獲取用戶關聯的card模型數據 dump($user->cards); } ```
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