本文实例讲述了PHP实现的链式队列结构。分享给大家供大家参考，具体如下：
<?php
header("Content-Type:text/html;charset=utf-8");
/**
* 链式队列
*/
class node{
public $nickname;
public $next;
}
class queue
{
public $front;//头部
public $tail;//尾部
public $maxSize;//容量
public $next;//指针
public $len=0;//长度
public function __construct($size)
{
$this->init($size);
}
public function init($size)
{
$this->front = $this;
$this->tail = $this;
$this->maxSize = $size;
}
//入队操作
public function inQ($nickname)
{
$node = new node();
$node->nickname = $nickname;
if ($this->len==$this->maxSize)
{
echo '队满了</br>';
} else {
$this->tail = $node;
$this->tail->next = $node;
$this->len++;
echo $node->nickname.'入队成功</br>';
}
}
//出队操作
public function outQ()
{
if ($this->len==0)
{
echo '队空了</br>';
} else {
$p = $this->front->next;
$this->front->next = $p->next;
$this->len--;
echo $p->nickname.'出队成功</br>';
}
}
//打印队
public function show()
{
for ($i=$this->len;$i>0;$i--)
{
$this->outQ();
}
}
}
echo "**********入队操作******************</br>";
$q = new queue(5);
$q->inQ('入云龙');
$q->inQ('花和尚');
$q->inQ('青面兽');
$q->inQ('行者');
$q->inQ('玉麒麟');
$q->inQ('母夜叉');
echo "**********出队队操作******************</br>";
$q->outQ();
$q->outQ();
$q->outQ();
$q->outQ();
$q->inQ('操刀鬼');
$q->inQ('截江鬼');
$q->inQ('赤发鬼');
$q->outQ();
?>
运行结果：
