两个相似数组的交集

Question

我有两个数组，第一个是第二个的排序版本（由用户排序），但第二个可以比第一个短或长。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"      ));我需要第三个数组，它尊重用户设置的顺序，但从第二个数组中删除丢失的书籍，并在其末尾添加第二个数组中的所有新书籍。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”键，因为还有其他键，但我认为它们对这个例子没有用。任何帮助表示赞赏，谢谢。