• 簡單工廠

<?php# 簡單工廠abstract class mycoach{public function __construct(){}}class cultivatecpc extends mycoach{public function __construct(){echo "把陳培昌培養(yǎng)為搏擊教練"."\n";}}class cultivatecj extends mycoach{public function __construct(){echo "把程勁培養(yǎng)為搏擊教練"."\n";}}class martialclub {public function cultivate($name){switch($name){case 'cj':return new cultivatecj();case 'cpc':return new cultivatecpc();default:echo '培養(yǎng)一個小教練'."\n";break;}return null;}}class clubmaster{public function cultivate(){$myclub = new martialclub();$myclub->cultivate('cj');$myclub = new martialclub();$myclub->cultivate('cpc');}}$mymaster = new clubmaster();$mymaster->cultivate();

輸出結果：

把程勁培養(yǎng)為搏擊教練 把陳培昌培養(yǎng)為搏擊教練

• ?（復雜）工廠

<?php abstract class mycoach {public function __construct(){} }class cpc extends mycoach {public function __construct(){echo "培養(yǎng)出了搏擊教練昌仔"."\n";} }class cj extends mycoach {public function __construct(){echo "培養(yǎng)出了搏擊教練勁兒弟弟"."\n"; } }interface cultivate{function cultivate(); }class cultivatecpc implements cultivate {public function cultivate(){return new cpc();} }class cultivatecj implements cultivate {public function cultivate(){return new cj();} }class coach{public function __construct(){$coach = new cultivatecpc();$coach->cultivate();$coach = new cultivatecj();$coach->cultivate();} }$littlecoach = new coach();

輸出結果：

培養(yǎng)出了搏擊教練昌仔 培養(yǎng)出了搏擊教練勁兒弟弟

• ?觀察者模式

<?phpclass watcher{private $name;public function __construct($myname){$this->name=$myname;}public function update($food){switch($food){case '奶油蛋糕':echo $food."上桌了，".$this->name.'取出了一份紙盤子和塑料叉子,切了一塊'."\n";break;case '烤鴨':echo $food."上桌了，".$this->name.'取了張薄餅，夾了些許蔥絲，刷了些甜面醬'."\n";break;default:echo $food."上桌了，".$this->name."趕緊加了兩筷子"."\n";break;}return null;}}class watchee{private $watchlist = [];public function addwatcher($watcher){$this->watchlist[]=$watcher;}public function removewatcher($watcher){$target = array_search($watcher,$this->watchlist);$target = (int)$target;unset($this->watchlist[$target]);//echo $target."\n"; }public function loaddish($dishname){$this->notify($dishname);}public function notify($dishname){
　　　　　　#這里推薦用foreach循環(huán)，for循環(huán)帶來的陷阱是，如果以數(shù)字為索引，執(zhí)行removewatcher方法后，有些索引就沒了，訪問不到就會報錯 　　　　foreach($this->watchlist as $k=>$v){$this->watchlist[$k]->update($dishname);}}}$cpc = new watcher('陳培昌');$cj = new watcher('程勁');$observee = new watchee();$observee->addwatcher($cpc);$observee->addwatcher($cj);$observee->loaddish('蔥香四川涼面');$observee->removewatcher($cj);$observee->loaddish('奶油蛋糕');$xxd = new watcher('徐曉冬');$observee->addwatcher($xxd);$observee->loaddish('避風塘茄子');

輸出結果：

蔥香四川涼面上桌了，陳培昌趕緊加了兩筷子 蔥香四川涼面上桌了，程勁趕緊加了兩筷子 奶油蛋糕上桌了，陳培昌取出了一份紙盤子和塑料叉子,切了一塊 避風塘茄子上桌了，陳培昌趕緊加了兩筷子 避風塘茄子上桌了，徐曉冬趕緊加了兩筷子

?

轉載于:https://www.cnblogs.com/saintdingspage/p/11330426.html

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