详解php装饰模式的示例代码
<?php
// 装饰模式
function echoline($msg) {
echo $msg, '<br/>';
}
class requesthelper
{
/**
* return class resource id
*/
public function tostring()
{
ob_start();
var_dump($this);
$str = ob_get_clean();
if (preg_match('/object\(' . class . '\)\#\d+/', $str, $matches)) {
return $matches[0];
}
return class;
}
}
// ---------------------------------------------------------
interface processrequest
{
public function process(requesthelper $req);
}
/**
* http request
*/
class httprequest implements processrequest
{
public function process(requesthelper $req)
{
echoline('process http request[' . $req . ']');
}
}
/**
* log decorator
* add log function
*/
class logrequest implements processrequest
{
protected $pr;
public function construct(processrequest $pr)
{
$this->pr = $pr;
}
public function process(requesthelper $req)
{
echoline('add log function!');
$this->pr->process($req);
}
}
/**
* authenticate decorator
* add authenticate function
*/
class authenticaterquest implements processrequest
{
protected $pr;
public function construct(processrequest $pr)
{
$this->pr = $pr;
}
public function process(requesthelper $req)
{
echoline('add authenticate function!');
$this->pr->process($req);
}
}
// test code
$req = new requesthelper();
$process = new httprequest();
// add log
$process = new logrequest($process);
// add auth
$process = new authenticaterquest($process);
// process request
$process->process($req);
以上就是详解php装饰模式的示例代码的详细内容。