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单链表是一种链式存取的数据结构，用一组地址任意的存储单元存放线性表中的数据元素。

单链表简介

链表中的数据是以结点来表示的，每个结点的构成：元素(数据元素的映象) + 指针(指示后继元素存储位置)，元素就是存储数据的存储单元，指针就是连接每个结点的地址数据。

关键代码如下所示：

<?php

/**

* 单链表

*/

class Demo

{

private $id;

public $name;

public $next;

public function __construct ($id = '', $name = '')

{

$this->id = $id;

$this->name = $name;

}

static public function show ($head)

{

$cur = $head;

while ($cur->next) {

echo $cur->next->id,'###',$cur->next->name,'<br />';

$cur = $cur->next;

}

echo '<hr />';

}

//尾插法

static public function push ($head, $node)

{

$cur = $head;

while (NULL != $cur->next) {

$cur = $cur->next;

}

$cur->next = $node;

return $head;

}

static public function insert($head, $node)

{

$cur = $head;

while (NULL != $cur->next) {

if ($cur->next->id > $node->id) {

break;

}

$cur = $cur->next;

}

$node->next = $cur->next;

$cur->next = $node;

return $head;

}

static public function edit($head, $node)

{

$cur = $head;

while (NULL != $cur->next) {

if ($cur->next->id == $node->id) {

break;

}

$cur = $cur->next;

}

$cur->next->name = $node->name;

return $head; 

}

static public function pop ($head, $node)

{

$cur = $head;

while (NULL != $cur->next) {

if ($cur->next == $node) {

break;

}

$cur = $cur->next;

}

$cur->next = $node->next;

return $head; 

}

}

$team = new Demo();

$node1 = new Demo(1, '唐三藏');

Demo::push($team, $node1);

$node1->name = '唐僧';

Demo::show($team);

// Demo::show($team);

$node2 = new Demo(2, '孙悟空');

Demo::insert($team, $node2);

// Demo::show($team);

$node3 = new Demo(5, '白龙马');

Demo::push($team, $node3);

// Demo::show($team);

$node4 = new Demo(3, '猪八戒');

Demo::insert($team, $node4);

// Demo::show($team);

$node5 = new Demo(4, '沙和尚');

Demo::insert($team, $node5);

// Demo::show($team);

$node4->name = '猪悟能';//php对象传引用，所以Demo::edit没有必要

// unset($node4);

// $node4 = new Demo(3, '猪悟能');

// Demo::edit($team, $node4);

Demo::pop($team, $node1);

Demo::show($team);

以上所述是小编给大家介绍的PHP单链表的实现代码，希望对大家有所帮助