PHP command pattern implements a simple code example

PHP command pattern implements a simple code example

<?php//Command Mode interface Command{public function execute ();} /** * Concrete command, specific commands */class Concretecommand implements command{private $receiver;p ublic function construct (rece Iver $r) {$this->receiver = $r;} Public Function Execute () {$this->receiver->doaction ();}} /** * receiver, executor of command */class receiver{public function doAction () {echo ' Action has been taken!<br/> ';}} /** * Requestor, requestor of the command */class invoker{private $cmd;p ublic function construct (command $cmd) {$this->cmd = $cmd;} /** * Call Command execute */public function action () {$this->cmd->execute ();}} Test code$r = new Receiver (), $cmd = new Concretecommand ($r), $invoker = new Invoker ($cmd); $invoker->action ();