php系列----->通过PHP数组实现队列

废话少说，上代码（talk is easy ,show me the code）: <?php /** * 通过 PHP 数组实现的队列 */ class SimpleQueue { private $_queue = []; private $_size = 0; public function __construct($size = 10) { $this->_size = $size; } // 入队 public function enqueue($value) { if (count($this->_queue) > $this->_size) { return false; } array_push($this->_queue, $value); } // 出队 public function dequeue() { if (count($this->_queue) == 0) { return false; } return array_shift($this->_queue); } public function size() { return count($this->_queue); } } $queue = new SimpleQueue(5); $queue->enqueue(1); $queue->enqueue(3); $queue->enqueue(5); var_dump($queue->dequeue()); # 1 var_dump($queue->size()); # 2