PHP SPL 四种常用的数据结构

//固定尺寸的数组//$array = new SplFixedArray(10);//$array[0] = 123;//$array[9] = 1234;////var_dump($array);//堆//$heap = new SplMinHeap();//$heap->insert("data1\n");//$heap->insert("data2\n");//echo $heap->extract();//echo $heap->extract();//栈//$stack = new SplStack();//$stack->push("data1\n");//$stack->push("data2\n");////echo $stack->pop();//echo $stack->pop();//队列//$queue = new SplQueue();//$queue->enqueue("data1\n");//$queue->enqueue("data2\n");//echo $queue->dequeue();//echo $queue->dequeue();