PHP 数据结构

//栈结构，先进后出
$stack 		= new SplStack();
//入
$stack->push("data1<br>");
$stack->push("data2<br>");

echo $stack->pop();
echo $stack->pop();

//队列，先进先出
$queue 		= new SplQueue();
//入
$queue->enqueue('data1<br>');
$queue->enqueue('data2<br>');

echo $queue->dequeue();
echo $queue->dequeue();

//堆结构，先进先出
$heap 		= new SplMinHeap();
//入
$heap->insert('data1<br>');
$heap->insert('data2<br>');

echo $heap->extract();
echo $heap->extract();

//固定尺寸数组
$array 		= new SplFixedArray(10);
$array[0] 	= 1;
$array[9] 	= 10;

var_dump($array);