<?php /** * 命令角色 */ interface Command { /** * 执行方法 */ public function execute(); } /** * 宏命令接口 */ interface MacroCommand extends Command { /** * 宏命令聚集的管理方法，可以删除一个成员命令 * @param Command $command */ public function remove(Command $command); /** * 宏命令聚集的管理方法，可以增加一个成员命令 * @param Command $command */ public function add(Command $command); } class DemoMacroCommand implements MacroCommand { private $_commandList; public function __construct() { $this->_commandList = array(); } public function remove(Command $command) { $key = array_search($command, $this->_commandList); if ($key === FALSE) { return FALSE; } unset($this->_commandList[$key]); return TRUE; } public function add(Command $command) { return array_push($this->_commandList, $command); } public function execute() { foreach ($this->_commandList as $command) { $command->execute(); } } } /** * 具体拷贝命令角色 */ class CopyCommand implements Command { private $_receiver; public function __construct(Receiver $receiver) { $this->_receiver = $receiver; } /** * 执行方法 */ public function execute() { $this->_receiver->copy(); } } /** * 具体拷贝命令角色 */ class PasteCommand implements Command { private $_receiver; public function __construct(Receiver $receiver) { $this->_receiver = $receiver; } /** * 执行方法 */ public function execute() { $this->_receiver->paste(); } } /** * 接收者角色 */ class Receiver { /* 接收者名称 */ private $_name; public function __construct($name) { $this->_name = $name; } /** * 复制方法 */ public function copy() { echo $this->_name, ' do copy action.<br />'; } /** * 粘贴方法 */ public function paste() { echo $this->_name, ' do paste action.<br />'; } } /** * 请求者角色 */ class Invoker { private $_command; public function __construct(Command $command) { $this->_command = $command; } public function action() { $this->_command->execute(); } } /** * 客户端 */ class Client { /** * Main program. */ public static function main() { $receiver = new Receiver('phpppan'); $pasteCommand = new PasteCommand($receiver); $copyCommand = new CopyCommand($receiver); $macroCommand = new DemoMacroCommand(); $macroCommand->add($copyCommand); $macroCommand->add($pasteCommand); $invoker = new Invoker($macroCommand); $invoker->action(); $macroCommand->remove($copyCommand); $invoker = new Invoker($macroCommand); $invoker->action(); } } Client::main(); ?>
以上就是使用php实现命令模式的代码，还有一些关于命令模式的概念区分，希望对大家的学习有所帮助。
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