{"id":874,"date":"2019-08-05T17:18:10","date_gmt":"2019-08-05T09:18:10","guid":{"rendered":"https:\/\/wyxxt.org.cn\/?p=874"},"modified":"2023-12-04T16:44:21","modified_gmt":"2023-12-04T08:44:21","slug":"php%e8%ae%be%e8%ae%a1%e6%a8%a1%e5%bc%8f","status":"publish","type":"post","link":"https:\/\/wyxxt.org.cn\/?p=874","title":{"rendered":"\u5e38\u7528\u8bbe\u8ba1\u6a21\u5f0f"},"content":{"rendered":"

1.\u5de5\u5382\u6a21\u5f0f\uff08Factory\uff09<\/h3>\n
<?php\nnamespace DesignPattern;\nclass Factory\n{\n    static function createDatabase()\n    {\n        $db = new Database();\n        return $db;\n    }\n}\n<\/code><\/pre>\n
2.\u5355\u4f8b\u6a21\u5f0f<\/h3>\n
<?php\nnamespace DesignPattern;\nclass Database\n{\n    static protected $db;\n    private function __construct()\n    {\n\n    }\n\n    static function getInstance()\n    {\n        if(self::$db)\n        {\n            return self::$db;\n        }else{\n            self::$db = new self();\n            return self::$db;\n        }\n\n    }\n}\n<\/code><\/pre>\n
3.\u6ce8\u518c\u6a21\u5f0f(Register)<\/h3>\n
<?php\nnamespace DesignPattern;\nclass Register\n{\n    protected static $objects;\n\n    static function set($alias, $object)\n    {\n        self::$objects[$alias] = $object;\n    }\n\n    static function get($alias)\n    {\n        return self::$objects[$alias];\n    }\n\n    static function _unset($alias)\n    {\n        unset(self::$objects[$alias]);\n    }\n}\n<\/code><\/pre>\n
4.\u9002\u914d\u5668\u6a21\u5f0f (Adapter)<\/h3>\n
    \n
  1. \u5c06\u622a\u7136\u4e0d\u540c\u7684\u51fd\u6570\u63a5\u53e3\u5c01\u88c5\u6210\u7edf\u4e00\u7684API<\/li>\n
  2. \u793a\u4f8b\uff0cPHP\u7684\u6570\u636e\u5e93\u9a71\u52a8\u6709mysql,mysqli,pdo\u7b49\u3002cache\u9002\u914d\u5668\uff1amemcached,redis,file,apc\u7edf\u4e00\u6210\u4e00\u81f4\u7684API<\/li>\n<\/ol>\n
    \/\/ thinkphp\/library\/think\/cache\n\/\/ thinkphp\/library\/think\/log\n<\/code><\/pre>\n
    5.\u7b56\u7565\u6a21\u5f0f(Strategy)<\/h3>\n
      \n
    1. \u5c06\u4e00\u7ec4\u7279\u5b9a\u7684\u884c\u4e3a\u548c\u7b97\u6cd5\u5c01\u88c5\u6210\u7c7b\uff0c\u4ee5\u9002\u5e94\u67d0\u4e9b\u7279\u5b9a\u7684\u4e0a\u4e0b\u6587\u73af\u5883<\/li>\n
    2. \u793a\u4f8b\uff1a\u7535\u5546\u7f51\u7ad9\u7cfb\u7edf\uff0c\u9488\u5bf9\u7537\u6027\u5973\u6027\u7528\u6237\u5404\u81ea\u8df3\u8f6c\u4e0d\u540c\u7684\u5546\u54c1\u76ee\u5f55\uff0c\u5e76\u4e14\u6240\u6709\u5e7f\u544a\u4f4d\u5c55\u793a\u4e0d\u540c\u7684\u5e7f\u544a<\/li>\n
    3. \u4f7f\u7528\u7b56\u7565\u6a21\u5f0f\u53ef\u4ee5\u5b9e\u73b0Ioc\uff0c\u4f9d\u8d56\u5012\u7f6e\u3001\u63a7\u5236\u53cd\u8f6c<\/li>\n<\/ol>\n
      \/\/ UserStrategy.php\n<?php\nnamespace DesignPattern;\n\ninterface UserStrategy\n{\n    function showAd();\n    function showCategory();\n}\n\n\/\/ FemaleUserStrategy.php\n<?php\nnamespace DesignPattern;\n\nclass FemaleUserStrategy implements UserStrategy\n{\n    function showAd()\n    {\n        echo '2014\u65b0\u6b3e\u5973\u88c5';\n    }\n\n    function showCategory()\n    {\n        echo '\u5973\u88c5';\n    }\n}\n\n\/\/ MaleUserStrategy.php\n<?php\nnamespace DesignPattern;\nclass MaleUserStrategy implements UserStrategy\n{\n    function showAd()\n    {\n        echo 'Iphone6';\n    }\n\n    function showCategory()\n    {\n        echo '\u7535\u5b50\u4ea7\u54c1';\n    }\n}\n\n\/\/ index.php\nclass Page\n{\n    \/**\n     * @var DesignPattern\\UserStrategy\n     *\/\n    protected $strategy;\n    function index()\n    {\n        $this->strategy->showAd();\n        echo \"<br>\";\n        $this->strategy->showCategory();\n    }\n\n    function setStrategy(DesignPattern\\UserStrategy $strategy)\n    {\n        $this->strategy = $strategy;\n    }\n}\n\n$page = new Page();\nif(isset($_GET['female']))\n{\n    $strategy = new DesignPattern\\FemaleUserStrategy();\n}else{\n    $strategy = new DesignPattern\\MaleUserStrategy();\n}\n$page->setStrategy($strategy);\n$page->index();\n<\/code><\/pre>\n
      6.\u6570\u636e\u5bf9\u8c61\u6620\u5c04\u6a21\u5f0f<\/h3>\n
      7.\u89c2\u5bdf\u8005\u6a21\u5f0f\uff08Observer\uff09<\/h3>\n
        \n
      1. \u5f53\u4e00\u4e2a\u5bf9\u8c61\u72b6\u6001\u53d1\u751f\u6539\u53d8\u65f6\uff0c\u4f9d\u8d56\u5b83\u7684\u5bf9\u8c61\u5168\u90e8\u4f1a\u6536\u5230\u901a\u77e5\uff0c\u5e76\u81ea\u52a8\u66f4\u65b0<\/li>\n
      2. \u573a\u666f\uff1a\u4e00\u4e2a\u4e8b\u4ef6\u53d1\u751f\u540e\uff0c\u8981\u6267\u884c\u4e00\u8fde\u4e32\u66f4\u65b0\u64cd\u4f5c\u3002\u4f20\u7edf\u7684\u7f16\u7a0b\u65b9\u5f0f\uff0c\u5c31\u662f\u5728\u4e8b\u4ef6\u7684\u4ee3\u7801\u4e4b\u540e\u76f4\u63a5\u52a0\u5165\u5904\u7406\u903b\u8f91\u3002\u5f53\u66f4\u65b0\u7684\u903b\u8f91\u589e\u591a\u4e4b\u540e\uff0c\u4ee3\u7801\u4f1a\u53d8\u5f97\u96be\u4ee5\u7ef4\u62a4\u3002\u8fd9\u79cd\u65b9\u5f0f\u662f\u8026\u5408\u7684\uff0c\u4fb5\u5165\u5f0f\u7684\uff0c\u589e\u52a0\u65b0\u7684\u903b\u8f91\u9700\u8981\u4fee\u6539\u4e8b\u4ef6\u4e3b\u4f53\u7684\u4ee3\u7801<\/li>\n
      3. \u89c2\u5bdf\u8005\u6a21\u5f0f\u5b9e\u73b0\u4e86\u4f4e\u8026\u5408\uff0c\u975e\u4fb5\u5165\u5f0f\u7684\u901a\u77e5\u548c\u66f4\u65b0\u673a\u5236<\/li>\n<\/ol>\n
        \/\/ Observer.php\n<?php\nnamespace DesignPattern;\n\ninterface Observer\n{\n    function update($event_info = null);\n}\n\n\/\/ EventGenerator.php\n<?php\nnamespace DesignPattern;\nabstract class EventGenerator\n{\n    private $observers = array();\n    function addObserver(Observer $observer) {\n        $this->observers[] = $observer;\n    }\n\n    function notify() {\n        foreach ($this->observers as $observer) {\n            $observer->update();\n        }\n    }\n}\n\n\/\/ index.php\nclass Event extends \\DesignPattern\\EventGenerator\n{\n    function trigger()\n    {\n        echo \"Event<br>\\n\";\n\n        $this->notify();\n        \/\/update\n\/\/        echo \"\u903b\u8f911<br>\\n\";\n\/\/        echo \"\u903b\u8f912<br>\\n\";\n\/\/        echo \"\u903b\u8f913<br>\\n\";\n    }\n}\nclass Observer1 implements \\DesignPattern\\Observer\n{\n    function update($event_info = null)\n    {\n        echo \"\u903b\u8f911<br>\\n\";\n    }\n}\nclass Observer2 implements \\DesignPattern\\Observer\n{\n    function update($event_info = null)\n    {\n        echo \"\u903b\u8f912<br>\\n\";\n    }\n}\n$event = new Event();\n$event->addObserver(new Observer1());\n$event->addObserver(new Observer2());\n$event->trigger();\n<\/code><\/pre>\n
        8.\u539f\u578b\u6a21\u5f0f(Prototype)<\/h3>\n
          \n
        1. \u4e0e\u5de5\u5382\u6a21\u5f0f\u4f5c\u7528\u7c7b\u4f3c\uff0c\u90fd\u662f\u7528\u6765\u521b\u5efa\u5bf9\u8c61\u7684<\/li>\n
        2. \u4e0e\u5de5\u5382\u6a21\u5f0f\u7684\u5b9e\u73b0\u4e0d\u540c\uff0c\u539f\u578b\u6a21\u5f0f\u662f\u5148\u521b\u5efa\u597d\u4e00\u4e2a\u539f\u578b\u5bf9\u8c61\uff0c\u7136\u540e\u901a\u8fc7clone\u539f\u578b\u5bf9\u8c61\u6765\u521b\u5efa\u65b0\u7684\u5bf9\u8c61\u3002\u8fd9\u6837\u5c31\u514d\u53bb\u4e86\u7c7b\u521b\u5efa\u65f6\u91cd\u590d\u7684\u521d\u59cb\u5316\u64cd\u4f5c<\/li>\n
        3. \u539f\u578b\u6a21\u5f0f\u9002\u7528\u4e8e\u5927\u5bf9\u8c61\u7684\u521b\u5efa\u3002\u521b\u5efa\u4e00\u4e2a\u5927\u5bf9\u8c61\u9700\u8981\u5f88\u5927\u7684\u5f00\u9500\uff0c\u5982\u679c\u6bcf\u6b21new\u5c31\u4f1a\u6d88\u8017\u5f88\u5927\uff0c\u539f\u578b\u6a21\u5f0f\u4ec5\u9700\u8981\u5185\u5b58\u62f7\u8d1d\u5373\u53ef<\/li>\n<\/ol>\n
          $prototype = new \\DesignPattern\\Canvas();\n$prototype->init();\n\n$canvas1 = clone $prototype;\n$canvas1->rect(3, 6, 4, 12);\n$canvas1->draw();\necho \"============================<br>\\n\";\n\n$canvas2 = clone $prototype;\n$canvas2->rect(1, 3, 2, 6);\n$canvas2->draw();\n<\/code><\/pre>\n
          9.\u88c5\u9970\u5668\u6a21\u5f0f (Decorator)<\/h3>\n
            \n
          1. \u53ef\u4ee5\u52a8\u6001\u6dfb\u52a0\u4fee\u6539\u7c7b\u7684\u529f\u80fd<\/li>\n
          2. \u4e00\u4e2a\u7c7b\u63d0\u4f9b\u4e86\u4e00\u9879\u529f\u80fd\uff0c\u5982\u679c\u8981\u5728\u4fee\u6539\u5e76\u6dfb\u52a0\u989d\u5916\u7684\u529f\u80fd\uff0c\u4f20\u7edf\u7684\u7f16\u7a0b\u6a21\u5f0f\uff0c\u9700\u8981\u5199\u4e00\u4e2a\u5b50\u7c7b\u7ee7\u627f\u5b83\uff0c\u5e76\u91cd\u65b0\u5b9e\u73b0\u7c7b\u7684\u65b9\u6cd5<\/li>\n
          3. \u4f7f\u7528\u88c5\u9970\u5668\u6a21\u5f0f\uff0c\u4ec5\u9700\u5728\u8fd0\u884c\u65f6\u6dfb\u52a0\u4e00\u4e2a\u88c5\u9970\u5668\u5bf9\u8c61\u5373\u53ef\u5b9e\u73b0\uff0c\u53ef\u4ee5\u5b9e\u73b0\u6700\u5927\u7684\u7075\u6d3b\u6027<\/li>\n<\/ol>\n
            \/\/ DrawDecorator.php\n<?php\nnamespace DesignPattern;\ninterface DrawDecorator\n{\n    function beforeDraw();\n    function afterDraw();\n}\n\n\/\/ ColorDecorator.php\n<?php\nnamespace DesignPattern;\nclass  ColorDecorator implements DrawDecorator\n{\n    protected $color;\n    function __construct($color = 'red')\n    {\n        $this->color = $color;\n    }\n\n    function beforeDraw()\n    {\n        echo \"<div style='color: {$this->color}'>\";\n    }\n    function afterDraw()\n    {\n        echo \"<\/div>\";\n    }\n}\n\n\/\/ Canvas.php\n<?php\nnamespace DesignPattern;\nclass Canvas\n{\n    public $data;\n    protected  $decorators = array();\n    function init($width = 20, $height = 10) {\n        $data = array();\n        for ($i = 0; $i < $height; $i++) {\n            for ($j = 0; $j < $width; $j++) {\n                $data[$i][$j] = '+';\n            }\n        }\n        $this->data = $data;\n    }\n\n    \/\/ \u63a5\u53e3\u4f5c\u4e3a\u5f15\u7528\u7c7b\u578b\u6765\u4f7f\u7528\uff0c\u4efb\u4f55\u5b9e\u73b0\u8be5\u63a5\u53e3\u7684\u7c7b\u7684\u5b9e\u4f8b\u90fd\u53ef\u4ee5\u5b58\u50a8\u5728\u8be5\u63a5\u53e3\u7c7b\u578b\u7684\u53d8\u91cf\u4e2d\uff0c\u901a\u8fc7\u8fd9\u4e9b\u53d8\u91cf\u53ef\u4ee5\u8bbf\u95ee\u7c7b\u4e2d\u6240\u5b9e\u73b0\u7684\u63a5\u53e3\u4e2d\u7684\u65b9\u6cd5\n    function addDecorator(DrawDecorator $decorator) {\n        $this->decorators[] = $decorator;\n    }\n\n    function beforeDraw()\n    {\n        foreach ($this->decorators as $decorator) {\n            $decorator->beforeDraw();\n        }\n    }\n\n    function afterDraw()\n    {\n        $decorators = array_reverse($this->decorators);\n        foreach ($decorators as $decorator) {\n            $decorator->afterDraw();\n        }\n    }\n\n    function draw()\n    {\n        $this->beforeDraw();\n        foreach ($this->data as $line) {\n            foreach ($line as $char) {\n                echo $char;\n            }\n            echo \"<br>\\n\";\n        }\n        $this->afterDraw();\n    }\n\n    function rect($a1, $a2, $b1, $b2) {\n        foreach ($this->data as $k1 => $line) {\n            if($k1 < $a1 or $k1 > $a2) continue;\n            foreach ($line as $k2 => $char) {\n                if($k2 < $b1 or $k2 > $b2) continue;\n                $this->data[$k1][$k2] = '=';\n            }\n        }\n    }\n}\n\n\/\/index.php\n$prototype = new \\DesignPattern\\Canvas();\n$prototype->init();\n\n$canvas1 = clone $prototype;\n\/\/ \u63a5\u53e3\u4f5c\u4e3a\u5f15\u7528\u7c7b\u578b\u6765\u4f7f\u7528\uff0c\u4efb\u4f55\u5b9e\u73b0\u8be5\u63a5\u53e3\u7684\u7c7b\u7684\u5b9e\u4f8b\u90fd\u53ef\u4ee5\u5b58\u50a8\u5728\u8be5\u63a5\u53e3\u7c7b\u578b\u7684\u53d8\u91cf\u4e2d\uff0c\u901a\u8fc7\u8fd9\u4e9b\u53d8\u91cf\u53ef\u4ee5\u8bbf\u95ee\u7c7b\u4e2d\u6240\u5b9e\u73b0\u7684\u63a5\u53e3\u4e2d\u7684\u65b9\u6cd5\n$canvas1->addDecorator(new \\DesignPattern\\ColorDecorator('green'));\n$canvas1->rect(3, 6, 4, 12);\n$canvas1->draw();\n<\/code><\/pre>\n
            10.\u8fed\u4ee3\u5668\u6a21\u5f0f \uff08Iterator\uff09 SPL<\/h3>\n
              \n
            1. \u5728\u4e0d\u9700\u8981\u4e86\u89e3\u5185\u90e8\u5b9e\u73b0\u7684\u524d\u63d0\u4e0b\uff0c\u904d\u5386\u4e00\u4e2a\u805a\u5408\u5bf9\u8c61\u7684\u5185\u90e8\u5143\u7d20<\/li>\n
            2. \u76f8\u6bd4\u4e8e\u4f20\u7edf\u7684\u7f16\u7a0b\u6a21\u5f0f\uff0c\u8fed\u4ee3\u5668\u6a21\u5f0f\u53ef\u4ee5\u9690\u85cf\u904d\u5386\u5143\u7d20\u7684\u6240\u9700\u7684\u64cd\u4f5c<\/li>\n<\/ol>\n
              11.\u4ee3\u7406\u6a21\u5f0f\uff08Proxy\uff09<\/h3>\n
                \n
              1. \u5728\u5ba2\u6237\u7aef\u4e0e\u5b9e\u4f53\u4e4b\u95f4\u5efa\u7acb\u4e00\u4e2a\u4ee3\u7406\u5bf9\u8c61\uff0c\u5ba2\u6237\u7aef\u5bf9\u5b9e\u4f53\u8fdb\u884c\u64cd\u4f5c\u5168\u90e8\u59d4\u6d3e\u7ed9\u4ee3\u7406\u5bf9\u8c61\uff0c\u9690\u85cf\u5b9e\u4f53\u7684\u5177\u4f53\u5b9e\u73b0\u7ec6\u8282\u3002<\/li>\n
              2. Proxy\u8fd8\u53ef\u4ee5\u4e0e\u4e1a\u52a1\u4ee3\u7801\u5206\u79bb\uff0c\u90e8\u7f72\u5230\u53e6\u5916\u7684\u670d\u52a1\u5668\u3002\u4e1a\u52a1\u4ee3\u7801\u4e2d\u901a\u8fc7RPC\u6765\u59d4\u6d3e\u4efb\u52a1\u3002<\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"
                1.\u5de5\u5382\u6a21\u5f0f\uff08Factory\uff09 <?php namespace DesignPattern; class […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[15],"tags":[409],"class_list":["post-874","post","type-post","status-publish","format-standard","hentry","category-15","tag-409"],"_links":{"self":[{"href":"https:\/\/wyxxt.org.cn\/index.php?rest_route=\/wp\/v2\/posts\/874","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wyxxt.org.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/wyxxt.org.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/wyxxt.org.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/wyxxt.org.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=874"}],"version-history":[{"count":28,"href":"https:\/\/wyxxt.org.cn\/index.php?rest_route=\/wp\/v2\/posts\/874\/revisions"}],"predecessor-version":[{"id":1975,"href":"https:\/\/wyxxt.org.cn\/index.php?rest_route=\/wp\/v2\/posts\/874\/revisions\/1975"}],"wp:attachment":[{"href":"https:\/\/wyxxt.org.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=874"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wyxxt.org.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=874"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wyxxt.org.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=874"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}