PHP デザインパターンインタプリタパターン-php手册-php.cn

PHP デザインパターンインタプリタパターン
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リリース： 2016-06-21 08:52:56
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インタプリタ: インタプリタ設計パターンは、エンティティの主要な要素を分析し、各要素に独自の説明または対応するアクションを提供するために使用されます。
インタプリタ設計パターンは、PHP/HTML テンプレートシステムで最も一般的に使用されます。
<ol class="dp-c">
<li class="alt"><span><span><?php   </span></span></li><li><span>    <span class="keyword">class</span><span> User {   </span></span></li><li class="alt"><span>        <span class="keyword">protected</span><span> </span><span class="vars">$_username</span><span> = </span><span class="string">""</span><span>;   </span></span></li><li><span>        <span class="keyword">public</span><span> </span><span class="keyword">function</span><span> __construct(</span><span class="vars">$username</span><span>) {   </span></span></li><li class="alt"><span>            <span class="vars">$this</span><span>->_username = </span><span class="vars">$username</span><span>;   </span></span></li>
<li><span>        }  </span></li>
<li class="alt"><span>        <span class="keyword">public</span><span> </span><span class="keyword">function</span><span> getProfilePage() {   </span></span></li>
<li><span>            <span class="vars">$profile</span><span>  = </span><span class="string">"<h2>I like Never Again ! </h2>"</span><span>;   </span></span></li>
<li class="alt"><span>            <span class="vars">$profile</span><span> .= </span><span class="string">"I love all of their songs. My favorite CD: <br />"</span><span>;   </span></span></li>
<li><span>            <span class="vars">$profile</span><span> .= </span><span class="string">"{{myCD.getTitle}}!!"</span><span>;   </span></span></li>
<li class="alt"><span>               </span></li>
<li><span>            <span class="keyword">return</span><span> </span><span class="vars">$profile</span><span>;   </span></span></li>
<li class="alt"><span>        }   </span></li>
<li><span>    }   </span></li>
<li class="alt"><span>    <span class="keyword">class</span><span> userCD {   </span></span></li>
<li><span>        <span class="keyword">public</span><span> </span><span class="keyword">function</span><span> setUser(User </span><span class="vars">$user</span><span>) {   </span></span></li>
<li class="alt"><span>            <span class="vars">$this</span><span>->_user = </span><span class="vars">$user</span><span>;   </span></span></li>
<li><span>        }   </span></li>
<li class="alt"><span>        <span class="keyword">public</span><span> </span><span class="keyword">function</span><span> getTitle() {   </span></span></li>
<li><span>            <span class="vars">$title</span><span> = </span><span class="string">"Waste of a Rib"</span><span>;   </span></span></li>
<li class="alt"><span>            <span class="keyword">return</span><span> </span><span class="vars">$title</span><span>;   </span></span></li>
<li><span>        }   </span></li>
<li class="alt"><span>    }   </span></li>
<li><span>    <span class="keyword">class</span><span> userCDInterpreter {   </span></span></li>
<li class="alt"><span>           </span></li>
<li><span>        <span class="keyword">protected</span><span> </span><span class="vars">$_user</span><span> = NULL;   </span></span></li>
<li class="alt"><span>           </span></li>
<li><span>        <span class="keyword">public</span><span> </span><span class="keyword">function</span><span> setUser(User </span><span class="vars">$user</span><span>) {   </span></span></li>
<li class="alt"><span>            <span class="vars">$this</span><span>->_user = </span><span class="vars">$user</span><span>;   </span></span></li>
<li><span>        }   </span></li>
<li class="alt"><span>           </span></li>
<li><span>        <span class="keyword">public</span><span> </span><span class="keyword">function</span><span> getInterpreted() {   </span></span></li>
<li class="alt"><span>            <span class="vars">$profile</span><span> = </span><span class="vars">$this</span><span>->_user->getProfilePage();   </span></span></li>
<li><span>               </span></li>
<li class="alt"><span>            <span class="keyword">if</span><span> (preg_match_all(</span><span class="string">'/\{\{myCD\.(.*?)\}\}/'</span><span>, </span><span class="vars">$profile</span><span>, </span><span class="vars">$triggers</span><span>, PREG_SET_ORDER)) {   </span></span></li>
<li><span>                <span class="vars">$replacements</span><span> = </span><span class="keyword">array</span><span>();   </span></span></li>
<li class="alt"><span>                   </span></li>
<li><span>                <span class="keyword">foreach</span><span> (</span><span class="vars">$triggers</span><span> </span><span class="keyword">as</span><span> </span><span class="vars">$trigger</span><span>) {   </span></span></li>
<li class="alt"><span>                    <span class="vars">$replacements</span><span>[] = </span><span class="vars">$trigger</span><span>[1];   </span></span></li>
<li><span>                }   </span></li>
<li class="alt"><span>                   </span></li>
<li><span>                <span class="vars">$replacements</span><span> = </span><span class="func">array_unique</span><span>(</span><span class="vars">$replacements</span><span>);   </span></span></li>
<li class="alt"><span>                   </span></li>
<li><span>                <span class="vars">$myCD</span><span> = </span><span class="keyword">new</span><span> userCD();   </span></span></li>
<li class="alt"><span>                <span class="vars">$myCD</span><span>->setUser(</span><span class="vars">$this</span><span>->_user);   </span></span></li>
<li><span>                   </span></li>
<li class="alt"><span>                <span class="keyword">foreach</span><span> (</span><span class="vars">$replacements</span><span> </span><span class="keyword">as</span><span> </span><span class="vars">$replacement</span><span>) {   </span></span></li>
<li><span>                    <span class="vars">$profile</span><span> = </span><span class="func">str_replace</span><span>(</span><span class="string">"{{myCD.{$replacement}}}"</span><span>, call_user_func(</span><span class="keyword">array</span><span>(</span><span class="vars">$myCD</span><span>, </span><span class="vars">$replacement</span><span>)), </span><span class="vars">$profile</span><span>);   </span></span></li>
<li class="alt"><span>                }   </span></li>
<li><span>            }   </span></li>
<li class="alt"><span>               </span></li>
<li><span>            <span class="keyword">return</span><span> </span><span class="vars">$profile</span><span>;   </span></span></li>
<li class="alt"><span>        }   </span></li>
<li><span>           </span></li>
<li class="alt"><span>    }   </span></li>
<li><span>    <span class="vars">$username</span><span> = </span><span class="string">"aaron"</span><span>;   </span></span></li>
<li class="alt"><span>    <span class="vars">$user</span><span> = </span><span class="keyword">new</span><span> User(</span><span class="vars">$username</span><span>);   </span></span></li>
<li><span>    <span class="vars">$interpreter</span><span> = </span><span class="keyword">new</span><span> userCDInterpreter();   </span></span></li>
<li class="alt"><span>    <span class="vars">$interpreter</span><span>->setUser(</span><span class="vars">$user</span><span>);   </span></span></li>
<li><span>       </span></li>
<li class="alt"><span>    print <span class="string">"<h1>{$username}'s Profile</h1>"</span><span>;   </span></span></li>
<li><span>    print <span class="vars">$interpreter</span><span>->getInterpreted();   </span></span></li>
<li class="alt"><span>?> </span></li>
</ol>
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データベーススクリプトを参照してください: http://www.cxybl.com/html/wlbc/Php/2011_1126_9458.html