如題我有一個(gè)查詢會(huì)查出當(dāng)前用戶所有的權(quán)限 $authList = [ ['id' => 1, 'pid' => 0, 'title' => 'project'], ['id' => 2, 'pid' => 0, 'title' => 'customer'], ['id' => 3, 'pid' => 1, 'title' => 'select'], ['id' => 4, 'pid' => 1, 'title' => 'delete'], ['id' => 5, 'pid' => 2, 'title' => 'select'], ['id' => 6, 'pid' => 2, 'title' => 'delete'], ['id' => 7, 'pid' => 6, 'title' => 'logic delete'] ]; 我想重新組織這個(gè)數(shù)組使它根據(jù)pid變成樹(shù)形結(jié)構(gòu)，就像這樣 $result = [ [ 'id' => 1, 'pid' => 0, 'title' => 'project', 'children' => [ [ 'id' => 3, 'pid' => 1, 'title' => 'select' ], [ 'id' => 4, 'pid' => 1, 'title' => 'delete' ], ] ], [ [ 'id' => 2, 'pid' => 0, 'title' => 'customer', 'children' => [ [ 'id' => 5, 'pid' => 2, 'title' => 'select' ], [ 'id' => 6, 'pid' => 2, 'title' => 'delete', 'children' => [ [ 'id' => 7, 'pid' => 6, 'title' => 'logic delete' ] ], ] ], ], ], ]; 請(qǐng)問(wèn)大家有沒(méi)有什么要率高的算法？