我有兩個數組，第一個是第二個的排序版本（由用戶排序），但第二個可以比第一個短或長。例如：$books_sorted = array(     0 => array(        "title" => "In Search of Lost Time"     ),     1 => array(        "title" => "Don Quixote"     ),     2 => array(        "title" => "The Great Gatsby"     ));$books_available = array(      0 => array(         "title" => "Moby Dick"      ),      1 => array(         "title" => "In Search of Lost Time"      ),      2 => array(         "title" => "The Great Gatsby"      ),      3 => array(         "title" => "War and Peace"      ));我需要第三個數組，它尊重用戶設置的順序，但從第二個數組中刪除丟失的書籍，并在其末尾添加第二個數組中的所有新書籍。埃斯。// "Don Quixote" is not available anymore -> needs to be removed// "War and Peace" and "Moby Dick" are available -> need to be added both at the end$books_third_array = array(     0 => array(        "title" => "In Search of Lost Time"     ),     1 => array(        "title" => "The Great Gatsby"     ),     2 => array(        "title" => "Moby Dick"     ),     3 => array(        "title" => "War and Peace"     )    );我只放了“title”鍵，因為還有其他鍵，但我認為它們對這個例子沒有用。任何幫助表示贊賞，謝謝。