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<?xml version="1.0" encoding="utf-8"?>
<search>
<entry>
<title>使用反射实现依赖 自动注入</title>
<link href="/2019/05/14/%E4%BD%BF%E7%94%A8%E5%8F%8D%E5%B0%84%E5%AE%9E%E7%8E%B0%E4%BE%9D%E8%B5%96%E6%B3%A8%E5%85%A5/"/>
<url>/2019/05/14/%E4%BD%BF%E7%94%A8%E5%8F%8D%E5%B0%84%E5%AE%9E%E7%8E%B0%E4%BE%9D%E8%B5%96%E6%B3%A8%E5%85%A5/</url>
<content type="html"><![CDATA[<p>以laravel框架为例, 很多地方出现如下代码:</p><p>声明UserService类, 同时构造一个run()方法<br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br></pre></td><td class="code"><pre><span class="line"><span class="class"><span class="keyword">class</span> <span class="title">UserService</span></span></span><br><span class="line"><span class="class"></span>{</span><br><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">run</span><span class="params">()</span> </span>{</span><br><span class="line"><span class="keyword">echo</span> <span class="string">"i 'm run func()"</span>;</span><br><span class="line">}</span><br><span class="line">}</span><br></pre></td></tr></table></figure></p><p>声明个基类, 实例化时, 同时注入UserService类<br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br></pre></td><td class="code"><pre><span class="line"><span class="class"><span class="keyword">class</span> <span class="title">BaseController</span></span></span><br><span class="line"><span class="class"></span>{</span><br><span class="line"> <span class="keyword">protected</span> $userService;</span><br><span class="line"></span><br><span class="line"> <span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">__construct</span><span class="params">(UserService $userService)</span> </span>{</span><br><span class="line"> <span class="comment">//依赖注入服务</span></span><br><span class="line"> <span class="keyword">$this</span> -> userService = $userService;</span><br><span class="line"> }</span><br><span class="line">}</span><br></pre></td></tr></table></figure></p><p>ok, 前置条件已准备完毕。现在创建个控制器, 继承上面的BaseController来使用依赖</p><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br></pre></td><td class="code"><pre><span class="line"><span class="class"><span class="keyword">class</span> <span class="title">UserController</span> <span class="keyword">extends</span> <span class="title">BaseController</span></span></span><br><span class="line"><span class="class"></span>{</span><br><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">index</span><span class="params">()</span> </span>{</span><br><span class="line"><span class="keyword">$this</span>->userService->run();</span><br><span class="line">}</span><br><span class="line">}</span><br></pre></td></tr></table></figure><p>好了可以使用了, 浏览器输入<a href="http://localhost/user/index" target="_blank" rel="noopener">http://localhost/user/index</a> 就能调用UserService类的run()方法, 这里甚至不需要去实例化BaseController类, </p><h2 id="不需要给构造函数传参-因为框架内部使用了反射-帮你自动实例化对象-自动传参了。"><a href="#不需要给构造函数传参-因为框架内部使用了反射-帮你自动实例化对象-自动传参了。" class="headerlink" title="不需要给构造函数传参, 因为框架内部使用了反射 帮你自动实例化对象, 自动传参了。"></a>不需要给构造函数传参, 因为框架内部使用了<a href="https://www.php.net/manual/en/book.reflection.php" target="_blank" rel="noopener">反射</a> 帮你自动实例化对象, 自动传参了。</h2><p>下面自己实现一个类似的功能, 新建几个类:</p><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br></pre></td><td class="code"><pre><span class="line"><span class="class"><span class="keyword">class</span> <span class="title">User</span></span></span><br><span class="line"><span class="class"></span>{</span><br><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">userInfo</span><span class="params">()</span> </span>{</span><br><span class="line"><span class="keyword">echo</span> <span class="string">'user info'</span>;</span><br><span class="line">}</span><br><span class="line"></span><br><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">getAge</span><span class="params">()</span> </span>{</span><br><span class="line"><span class="keyword">echo</span> <span class="number">77</span>;</span><br><span class="line">}</span><br><span class="line">}</span><br></pre></td></tr></table></figure><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">include_once</span> <span class="string">'BaseController.php'</span>;</span><br><span class="line"></span><br><span class="line"><span class="class"><span class="keyword">class</span> <span class="title">Worker</span> <span class="keyword">extends</span> <span class="title">BaseController</span></span></span><br><span class="line"><span class="class"></span>{</span><br><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">getAge</span><span class="params">()</span> </span>{</span><br><span class="line"><span class="keyword">$this</span>->user->getAge();</span><br><span class="line">}</span><br><span class="line"></span><br><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">getUserInfo</span><span class="params">()</span> </span>{</span><br><span class="line"><span class="keyword">$this</span>->user->userInfo();</span><br><span class="line">}</span><br><span class="line">}</span><br></pre></td></tr></table></figure><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br></pre></td><td class="code"><pre><span class="line"></span><br><span class="line"><span class="keyword">include</span> <span class="string">'User.php'</span>;</span><br><span class="line"></span><br><span class="line"><span class="class"><span class="keyword">class</span> <span class="title">BaseController</span></span></span><br><span class="line"><span class="class"></span>{</span><br><span class="line"><span class="keyword">protected</span> $user;</span><br><span class="line"></span><br><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">__construct</span><span class="params">(User $user)</span> </span>{</span><br><span class="line"><span class="keyword">$this</span>->user = $user;</span><br><span class="line">}</span><br><span class="line">}</span><br></pre></td></tr></table></figure><p>好了, 然后在构造个简单的路由, 在里面实现自动注入，传参<br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">include</span> <span class="string">'Worker.php'</span>;</span><br><span class="line"></span><br><span class="line">$c = $_GET[<span class="string">'c'</span>];</span><br><span class="line">$a = $_GET[<span class="string">'a'</span>];</span><br><span class="line"></span><br><span class="line"><span class="keyword">if</span> (class_exists($c)) {</span><br><span class="line"><span class="keyword">if</span> (method_exists($c, $a)) {</span><br><span class="line"><span class="comment">//获得路由$c类的反射实例</span></span><br><span class="line">$construct = <span class="keyword">new</span> ReflectionClass($c);</span><br><span class="line"><span class="comment">//获取路由$c类的父类反射实例</span></span><br><span class="line">$baseConstruct = <span class="keyword">new</span> ReflectionClass($construct->getParentClass()->name);</span><br><span class="line"><span class="comment">//获取A类父类的构造函数参数</span></span><br><span class="line">$params = $baseConstruct->getConstructor()->getParameters();</span><br><span class="line"></span><br><span class="line">$paramList = [];</span><br><span class="line"> <span class="keyword">foreach</span> ($params <span class="keyword">as</span> $value) {</span><br><span class="line"> $tmp = $value->getClass()->name;</span><br><span class="line"> $paramList[] = <span class="keyword">new</span> $tmp();</span><br><span class="line"> }</span><br><span class="line"> <span class="comment">/*</span></span><br><span class="line"><span class="comment"> * 给构造函数注入参数，因子类没有构造函数，所以参数会注入到父类的构造函数中.</span></span><br><span class="line"><span class="comment"> * 这里就会实例化传入的路由类的基类,并且把参数自动注入到基类中</span></span><br><span class="line"><span class="comment"> **/</span></span><br><span class="line"> $obj = $construct->newInstanceArgs($paramList);</span><br><span class="line"> $obj->$a();</span><br><span class="line">}</span><br><span class="line">}</span><br></pre></td></tr></table></figure><br>浏览器输入localhost/Route.php?c=Worker&a=getAge 就会打印出 77</p>]]></content>
</entry>
<entry>
<title>使用socket, 实现简单的聊天</title>
<link href="/2019/04/23/%E4%BD%BF%E7%94%A8socket-%E5%AE%9E%E7%8E%B0%E7%AE%80%E5%8D%95%E7%9A%84%E8%81%8A%E5%A4%A9/"/>
<url>/2019/04/23/%E4%BD%BF%E7%94%A8socket-%E5%AE%9E%E7%8E%B0%E7%AE%80%E5%8D%95%E7%9A%84%E8%81%8A%E5%A4%A9/</url>
<content type="html"><![CDATA[<p><a href="http://rango.swoole.com/archives/date/2013/01" target="_blank" rel="noopener">原文地址</a><br>看完后有所感悟，所以添加了些东东</p><p>先看效果图<br><img src="https://sign-super.oss-cn-hangzhou.aliyuncs.com/shudun/chatslef.jpg" alt=""></p><p>是不是很简陋, 这样已经可以了。要想完善就慢慢的花时间改吧<br>实现思路, 首先创建个主进程 SockerServer.php, 这样命名或许有点欠妥。但是我仍然暂理解为server<br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br></pre></td><td class="code"><pre><span class="line"><span class="meta"><?php</span></span><br><span class="line"><span class="keyword">if</span>(($sock = socket_create(AF_INET, SOCK_STREAM, <span class="number">0</span>)) === <span class="keyword">false</span>) {</span><br><span class="line"> <span class="keyword">echo</span> <span class="string">"failed to create socket: "</span>.socket_strerror($sock) . PHP_EOL;</span><br><span class="line"> <span class="keyword">die</span>;</span><br><span class="line">}</span><br><span class="line"></span><br><span class="line">$address = <span class="string">'127.0.0.1'</span>;</span><br><span class="line">$port = <span class="number">88</span>;</span><br><span class="line"></span><br><span class="line"><span class="keyword">if</span>(($ret = socket_bind($sock, $address, $port)) < === <span class="keyword">false</span>) {</span><br><span class="line"> <span class="keyword">echo</span> <span class="string">"failed to bind socket: "</span>.socket_strerror($ret) . PHP_EOL;</span><br><span class="line"> <span class="keyword">die</span>;</span><br><span class="line">}</span><br><span class="line"></span><br><span class="line"><span class="keyword">if</span>( ( $ret = socket_listen($sock, <span class="number">0</span> ) ) === <span class="keyword">false</span> ) {</span><br><span class="line"> <span class="keyword">echo</span> <span class="string">"failed to listen to socket: "</span>.socket_strerror($ret) . PHP_EOL;</span><br><span class="line"> <span class="keyword">die</span>;</span><br><span class="line">}</span><br><span class="line"></span><br><span class="line"><span class="keyword">while</span> (<span class="keyword">true</span>) {</span><br><span class="line"> $conn = socket_accept($sock); <span class="comment">//主进程执行到此处,便不会往下执行. 它在等待接收新的socket.</span></span><br><span class="line"> <span class="comment">//如果有socket连接, 便fork一个 子进程</span></span><br><span class="line"> $fork = pcntl_fork();</span><br><span class="line"></span><br><span class="line"> <span class="keyword">if</span>($fork == <span class="number">0</span>)</span><br><span class="line"> {</span><br><span class="line"> $recv = socket_read($conn, <span class="number">8192</span>);</span><br><span class="line"> <span class="keyword">if</span> ($recv) {</span><br><span class="line"> <span class="keyword">list</span>($name, $msg) = explode(<span class="string">"|"</span>, $recv);</span><br><span class="line"> <span class="keyword">echo</span> <span class="string">"{$name} : {$msg}"</span>;</span><br><span class="line"> <span class="keyword">die</span>;</span><br><span class="line"> }</span><br><span class="line"> } <span class="keyword">else</span> {</span><br><span class="line"> socket_close($conn);</span><br><span class="line"> }</span><br><span class="line">}</span><br></pre></td></tr></table></figure><br>这样就可以了, 然后创建个 SockerClient.php</p><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br></pre></td><td class="code"><pre><span class="line"></span><br><span class="line">$address = <span class="string">'127.0.0.1'</span>;</span><br><span class="line">$port = <span class="number">88</span>;</span><br><span class="line"></span><br><span class="line"><span class="keyword">echo</span> <span class="string">"insert your name:"</span>; <span class="comment">//感觉insert比input合适</span></span><br><span class="line">$uname = fgets(STDIN);</span><br><span class="line"></span><br><span class="line"><span class="keyword">while</span>(<span class="keyword">true</span>) {</span><br><span class="line"></span><br><span class="line"><span class="keyword">if</span> (($createSock = socket_create(AF_INET, SOCK_STREAM, <span class="number">0</span>)) === <span class="keyword">false</span>) {</span><br><span class="line"> <span class="keyword">echo</span> <span class="string">"create error :"</span> . socket_strerror($createSock);</span><br><span class="line"> <span class="keyword">die</span>;</span><br><span class="line">}</span><br><span class="line"></span><br><span class="line"><span class="keyword">if</span> (($sockCon = socket_connect($createSock, $address, $port)) === <span class="keyword">false</span>) {</span><br><span class="line"> <span class="keyword">echo</span> <span class="string">"socket connect error: "</span>. socket_strerror($sockCon);</span><br><span class="line"> <span class="keyword">die</span>;</span><br><span class="line">}</span><br><span class="line"> <span class="keyword">echo</span> <span class="string">"enter msg: "</span>;</span><br><span class="line"> $msg = fgets(STDIN);</span><br><span class="line"> socket_write($createSock, $uname . <span class="string">'|'</span> . $msg);</span><br><span class="line"> socket_close($createSock);</span><br><span class="line">}</span><br></pre></td></tr></table></figure>]]></content>
</entry>
<entry>
<title>go笔记 平台之间的交叉编译</title>
<link href="/2019/02/28/go%E7%AC%94%E8%AE%B0-%E5%B9%B3%E5%8F%B0%E4%B9%8B%E9%97%B4%E7%9A%84%E4%BA%A4%E5%8F%89%E7%BC%96%E8%AF%91-1/"/>
<url>/2019/02/28/go%E7%AC%94%E8%AE%B0-%E5%B9%B3%E5%8F%B0%E4%B9%8B%E9%97%B4%E7%9A%84%E4%BA%A4%E5%8F%89%E7%BC%96%E8%AF%91-1/</url>
<content type="html"><![CDATA[<p>mac编译 linux, window64位 可执行程序<br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br></pre></td><td class="code"><pre><span class="line">CGO_ENABLED=<span class="number">0</span> GOOS=linux GOARCH=amd64 go build main.go</span><br><span class="line">CGO_ENABLED=<span class="number">0</span> GOOS=windows GOARCH=amd64 go build main.go</span><br></pre></td></tr></table></figure><br>linux编译 mac, windows64位 可执行程序<br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br></pre></td><td class="code"><pre><span class="line">CGO_ENABLED=<span class="number">0</span> GOOS=darwin GOARCH=amd64 go build main.go</span><br><span class="line">CGO_ENABLED=<span class="number">0</span> GOOS=windows GOARCH=amd64 go build main.go</span><br></pre></td></tr></table></figure></p><p>windows编译 Mac, Linux64位可执行程序<br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br></pre></td><td class="code"><pre><span class="line">SET CGO_ENABLED=<span class="number">0</span></span><br><span class="line">SET GOOS=darwin</span><br><span class="line">SET GOARCH=amd64</span><br><span class="line">go build main.go</span><br><span class="line"></span><br><span class="line">SET CGO_ENABLED=<span class="number">0</span></span><br><span class="line">SET GOOS=linux</span><br><span class="line">SET GOARCH=amd64</span><br><span class="line">go build main.go</span><br></pre></td></tr></table></figure></p>]]></content>
</entry>
<entry>
<title>php实现检测域名是否被墙</title>
<link href="/2018/12/24/php%E5%AE%9E%E7%8E%B0%E6%A3%80%E6%B5%8B%E5%9F%9F%E5%90%8D%E6%98%AF%E5%90%A6%E8%A2%AB%E5%A2%99/"/>
<url>/2018/12/24/php%E5%AE%9E%E7%8E%B0%E6%A3%80%E6%B5%8B%E5%9F%9F%E5%90%8D%E6%98%AF%E5%90%A6%E8%A2%AB%E5%A2%99/</url>
<content type="html"><![CDATA[<p>首先准备两台服务器,普通服务器一台, 能科学上网服务器一台.<br>本人环境 php version 7.2 mysql5.7</p><figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">大概思路:境内主要发起http请求，如果响应失败，则尝试到境外服务器请求</span><br></pre></td></tr></table></figure><p>存储结构<br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br></pre></td><td class="code"><pre><span class="line">SET NAMES utf8mb4;</span><br><span class="line">SET FOREIGN_KEY_CHECKS = <span class="number">0</span>;</span><br><span class="line"></span><br><span class="line">DROP TABLE <span class="keyword">IF</span> EXISTS `tbl_url`;</span><br><span class="line">CREATE TABLE `tbl_url` (</span><br><span class="line"> `id` int(<span class="number">11</span>) NOT <span class="keyword">NULL</span> AUTO_INCREMENT,</span><br><span class="line"> `in` tinyint(<span class="number">2</span>) <span class="keyword">DEFAULT</span> <span class="keyword">NULL</span>,</span><br><span class="line"> `out` tinyint(<span class="number">2</span>) <span class="keyword">DEFAULT</span> <span class="keyword">NULL</span>,</span><br><span class="line"> `note` varchar(<span class="number">255</span>) <span class="keyword">DEFAULT</span> <span class="keyword">NULL</span>,</span><br><span class="line"> `url` varchar(<span class="number">255</span>) <span class="keyword">DEFAULT</span> <span class="keyword">NULL</span>,</span><br><span class="line"> `created_at` datetime <span class="keyword">DEFAULT</span> <span class="keyword">NULL</span>,</span><br><span class="line"> `updated_at` datetime <span class="keyword">DEFAULT</span> <span class="keyword">NULL</span>,</span><br><span class="line"> PRIMARY KEY (`id`)</span><br><span class="line">) ENGINE=InnoDB AUTO_INCREMENT=<span class="number">13</span> <span class="keyword">DEFAULT</span> CHARSET=utf8;</span><br><span class="line"></span><br><span class="line">SET FOREIGN_KEY_CHECKS = <span class="number">1</span>;</span><br></pre></td></tr></table></figure></p><p>普通服务器代码<br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br><span class="line">42</span><br><span class="line">43</span><br><span class="line">44</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">try</span> {</span><br><span class="line"> $pdo = <span class="keyword">new</span> PDO(</span><br><span class="line"> <span class="string">'mysql:dbname=dbname;host=127.0.0.1;charset=UTF8'</span>, <span class="string">'username'</span>, <span class="string">'password'</span></span><br><span class="line"> );</span><br><span class="line">} <span class="keyword">catch</span> ( <span class="keyword">Exception</span> $ex ) {</span><br><span class="line"> <span class="keyword">exit</span>;</span><br><span class="line">}</span><br><span class="line"></span><br><span class="line">$update = <span class="function"><span class="keyword">function</span><span class="params">( $in, $out )</span> <span class="title">use</span> <span class="params">( $pdo, &$id )</span> </span>{</span><br><span class="line"> <span class="keyword">return</span> <span class="number">1</span> === $pdo->exec( sprintf(</span><br><span class="line"> <span class="string">'UPDATE `tbl_url` SET `in` = %d, `out` = %d, `updated_at` = NOW() WHERE `id` = %d LIMIT 1'</span>, $in, $out, $id</span><br><span class="line"> ) );</span><br><span class="line">};</span><br><span class="line"></span><br><span class="line">curl_setopt_array( $ch = curl_init(), [</span><br><span class="line"> CURLOPT_RETURNTRANSFER => <span class="keyword">true</span>,</span><br><span class="line"> CURLOPT_TIMEOUT => <span class="number">5</span>,</span><br><span class="line">]);</span><br><span class="line"></span><br><span class="line"><span class="keyword">foreach</span>( $pdo->query(</span><br><span class="line"> <span class="string">'SELECT `id`, `url` FROM `tbl_url` WHERE 1'</span></span><br><span class="line">)->fetchAll( PDO::FETCH_KEY_PAIR ) <span class="keyword">as</span> $id => $url ) {</span><br><span class="line"></span><br><span class="line"> curl_setopt( $ch, CURLOPT_URL, <span class="string">'http://科学上网服务器地址/?url='</span> . base64_encode( $url ) );</span><br><span class="line"></span><br><span class="line"> <span class="keyword">switch</span>( curl_exec( $ch ) ) {</span><br><span class="line"></span><br><span class="line"> <span class="keyword">case</span> <span class="number">1</span> :</span><br><span class="line"> $update( <span class="number">0</span>, <span class="number">1</span> );</span><br><span class="line"> <span class="keyword">break</span>;</span><br><span class="line"></span><br><span class="line"> <span class="keyword">case</span> <span class="number">2</span> :</span><br><span class="line"> fsockopen( $url, <span class="number">80</span>, $en, $es, <span class="number">4</span> ) ?</span><br><span class="line"> $update( <span class="number">2</span>, <span class="number">2</span> ) : $update( <span class="number">1</span>, <span class="number">2</span> );</span><br><span class="line"> <span class="keyword">break</span>;</span><br><span class="line"></span><br><span class="line"> <span class="keyword">default</span> :</span><br><span class="line"> $update( <span class="number">0</span>, <span class="number">0</span> );</span><br><span class="line"></span><br><span class="line"> }</span><br><span class="line"></span><br><span class="line">}</span><br><span class="line"></span><br><span class="line">curl_close( $ch );</span><br></pre></td></tr></table></figure></p><p>能科学上网的服务器代码<br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br></pre></td><td class="code"><pre><span class="line">error_reporting(<span class="number">0</span>); <span class="comment">//这句必须加上, 因为fsockopen打不开的时候会返回warning。这是个api所以要保持数据能正确返回2或者1</span></span><br><span class="line"><span class="keyword">echo</span> fsockopen( base64_decode( $_GET[<span class="string">'url'</span>] ), <span class="number">80</span>, $en, $es, <span class="number">4</span> ) ? <span class="number">2</span> : <span class="number">1</span>;</span><br></pre></td></tr></table></figure></p><p><img src="https://blog-image-1255951271.cos.ap-beijing.myqcloud.com/WX20191217-143917%402x.png" alt="linear-gradient(90deg, red 25%, yellow 37%, red 63%)"></p>]]></content>
</entry>
<entry>
<title>使用redis set集合实现牛牛</title>
<link href="/2018/11/19/%E4%BD%BF%E7%94%A8redis-set%E9%9B%86%E5%90%88%E5%AE%9E%E7%8E%B0%E7%89%9B%E7%89%9B/"/>
<url>/2018/11/19/%E4%BD%BF%E7%94%A8redis-set%E9%9B%86%E5%90%88%E5%AE%9E%E7%8E%B0%E7%89%9B%E7%89%9B/</url>
<content type="html"><![CDATA[<figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br><span class="line">42</span><br><span class="line">43</span><br><span class="line">44</span><br><span class="line">45</span><br><span class="line">46</span><br><span class="line">47</span><br><span class="line">48</span><br><span class="line">49</span><br></pre></td><td class="code"><pre><span class="line"><span class="meta"><?php</span></span><br><span class="line"></span><br><span class="line"><span class="function"><span class="keyword">function</span> <span class="title">webPuk</span><span class="params">()</span> </span>{</span><br><span class="line">$redis = <span class="keyword">new</span> Redis();</span><br><span class="line">$redis->connect(<span class="string">'127.0.0.1'</span>);</span><br><span class="line"></span><br><span class="line">$randNum = <span class="number">-5</span>; <span class="comment">//随机发5张可能重复的牌</span></span><br><span class="line">$totalNum = <span class="number">5</span>; <span class="comment">//每个玩家几张牌</span></span><br><span class="line"></span><br><span class="line"><span class="comment">//这里c d h s分别代表 黑桃几，红桃几，方块几，梅花几</span></span><br><span class="line">$redis->sadd(<span class="string">'deck'</span>, <span class="string">'CA'</span>, <span class="string">'C2'</span>, <span class="string">'C3'</span>, <span class="string">'C4'</span>, <span class="string">'C5'</span>, <span class="string">'C6'</span>, <span class="string">'C7'</span>, <span class="string">'C8'</span>, <span class="string">'C9'</span>, <span class="string">'C10'</span>, <span class="string">'CJ'</span>, <span class="string">'CQ'</span>, <span class="string">'CK'</span>, <span class="string">'DA'</span>, <span class="string">'D2'</span>, <span class="string">'D3'</span>, <span class="string">'D4'</span>, <span class="string">'D5'</span>, <span class="string">'D6'</span>, <span class="string">'D7'</span>, <span class="string">'D8'</span>, <span class="string">'D9'</span>, <span class="string">'D10'</span>, <span class="string">'DJ'</span>, <span class="string">'DQ'</span>, <span class="string">'DK'</span>, <span class="string">'HA'</span>, <span class="string">'H2'</span>, <span class="string">'H3'</span>, <span class="string">'H4'</span>, <span class="string">'H5'</span>, <span class="string">'H6'</span>, <span class="string">'H7'</span>, <span class="string">'H8'</span>, <span class="string">'H9'</span>, <span class="string">'H10'</span>, <span class="string">'HJ'</span>, <span class="string">'HQ'</span>, <span class="string">'HK'</span>, <span class="string">'SA'</span>, <span class="string">'S2'</span>, <span class="string">'S3'</span>, <span class="string">'S4'</span>, <span class="string">'S5'</span>, <span class="string">'S6'</span>, <span class="string">'S7'</span>, <span class="string">'S8'</span>, <span class="string">'S9'</span>, <span class="string">'S10'</span>, <span class="string">'SJ'</span>, <span class="string">'SQ'</span>, <span class="string">'SK'</span>);</span><br><span class="line"></span><br><span class="line"><span class="comment">//模拟三个三家玩斗牛</span></span><br><span class="line">$result = $redis->SRANDMEMBER(<span class="string">'deck'</span>, $randNum);</span><br><span class="line">$result2 = $redis->SRANDMEMBER(<span class="string">'deck'</span>, $randNum);</span><br><span class="line">$result3 = $redis->SRANDMEMBER(<span class="string">'deck'</span>, $randNum);</span><br><span class="line"></span><br><span class="line"><span class="keyword">echo</span> $msg1 = <span class="string">"玩家1: "</span> . PHP_EOL;</span><br><span class="line"><span class="keyword">foreach</span> ($result <span class="keyword">as</span> $k => $v) {</span><br><span class="line"><span class="keyword">if</span> ($k > $totalNum) {</span><br><span class="line"><span class="keyword">break</span>;</span><br><span class="line">}</span><br><span class="line"> <span class="keyword">echo</span> $v . PHP_EOL;</span><br><span class="line">}</span><br><span class="line"></span><br><span class="line"><span class="keyword">echo</span> <span class="string">"<br/>"</span>;</span><br><span class="line"><span class="keyword">echo</span> $msg2 = <span class="string">"玩家2: "</span> . PHP_EOL;</span><br><span class="line"><span class="keyword">foreach</span> ($result2 <span class="keyword">as</span> $k => $v) {</span><br><span class="line"><span class="keyword">if</span> ($k > $totalNum) {</span><br><span class="line"><span class="keyword">break</span>;</span><br><span class="line">}</span><br><span class="line"><span class="keyword">echo</span> $v . PHP_EOL;</span><br><span class="line">}</span><br><span class="line"></span><br><span class="line"><span class="keyword">echo</span> <span class="string">"<br/>"</span>;</span><br><span class="line"><span class="keyword">echo</span> $msg3 = <span class="string">"玩家3: "</span> . PHP_EOL;</span><br><span class="line"><span class="keyword">foreach</span> ($result3 <span class="keyword">as</span> $k => $v) {</span><br><span class="line"><span class="keyword">if</span> ($k > $totalNum) {</span><br><span class="line"><span class="keyword">break</span>;</span><br><span class="line">}</span><br><span class="line"><span class="keyword">echo</span> $v . PHP_EOL;</span><br><span class="line">}</span><br><span class="line"></span><br><span class="line">}</span><br><span class="line"></span><br><span class="line">webPuk();</span><br><span class="line"></span><br><span class="line"><span class="keyword">echo</span> <span class="string">"</br>"</span>;</span><br><span class="line"><span class="keyword">echo</span> <span class="string">"<a href='./run.php'>重新发牌</a>"</span>;</span><br></pre></td></tr></table></figure><p>效果如下:<br>玩家1: H1 D10 HK CQ S2<br>玩家2: DQ D9 S2 D8 C9<br>玩家3: C3 H3 DJ H3 H4 重新发牌</p><p>这里牌的颜色翻译就不写了, 本来打算写完自动算出哪个玩家胜利, </p><p><a href="https://www.cnblogs.com/cnxkey/articles/9175362.html" target="_blank" rel="noopener">参考上篇</a><br><a href="https://www.cnblogs.com/cnxkey/articles/9175368.html" target="_blank" rel="noopener">参考中篇</a><br><a href="https://www.cnblogs.com/cnxkey/articles/9175372.html" target="_blank" rel="noopener">参考下篇</a></p><p>看完以后整个人<br><img src="https://blog-image-1255951271.cos.ap-beijing.myqcloud.com/u%3D2123950941%2C126437839%26fm%3D26%26gp%3D0.jpg" alt=""></p><p><a href="https://www.goxy.top/web-puke.php" target="_blank" rel="noopener">体验</a></p>]]></content>
</entry>
<entry>
<title>php实现异步调用</title>
<link href="/2018/10/20/php%E5%AE%9E%E7%8E%B0%E5%BC%82%E6%AD%A5%E8%B0%83%E7%94%A8/"/>
<url>/2018/10/20/php%E5%AE%9E%E7%8E%B0%E5%BC%82%E6%AD%A5%E8%B0%83%E7%94%A8/</url>
<content type="html"><![CDATA[<p>php默认的请求方式是同步的, 即发送请求必须等到服务端响应才可进行下一步操作。<br>这个默认的机制，导致碰到一些需求会很尴尬. 如:<code>注册时, 掉用了第三方的api服务(人脸识别, 身份证识别啥啥啥的)</code></p><p>这个时候就尴尬了，你的界面必须等待第三方返回方可进行下一步，这对用户的体验是个很大的障碍。 </p><p>这个时候就很适合用异步请求了。只需要调用第三方api无需等待响应。</p><p>下面是个核心的demo。去掉了具体的实现逻辑…</p><p><code>ignore_user_abort(true)</code> <a href="https://www.php.net/manual/zh/function.ignore-user-abort.php" target="_blank" rel="noopener">客户端断开连接，是否中断脚本</a><br><code>set_time_limit(0)</code> <a href="https://www.php.net/manual/zh/function.set-time-limit.php" target="_blank" rel="noopener">脚本执行时间没有限制</a></p><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br></pre></td><td class="code"><pre><span class="line">ignore_user_abort(<span class="keyword">true</span>); </span><br><span class="line">set_time_limit(<span class="number">0</span>);</span><br><span class="line"></span><br><span class="line"><span class="function"><span class="keyword">function</span> <span class="title">asynRequest</span><span class="params">($url)</span> </span>{</span><br><span class="line"> </span><br><span class="line"> $fp = fsockopen($url, <span class="number">80</span>, $errno, $errstr, <span class="number">10</span>);</span><br><span class="line"></span><br><span class="line"> <span class="keyword">if</span> (<span class="keyword">false</span> === $fp) {</span><br><span class="line"> <span class="keyword">echo</span> <span class="string">"连接失败"</span>;</span><br><span class="line"> <span class="keyword">die</span>;</span><br><span class="line"> }</span><br><span class="line"> </span><br><span class="line"> $out = <span class="string">"GET /api.php?age=8&name=getin HTTP/1.1 \r\n"</span>;</span><br><span class="line"> $out .= <span class="string">"Host: "</span>. $url . <span class="string">"\r\n"</span>;</span><br><span class="line"> $out .= <span class="string">"Connection:Close \r\n\r\n"</span>;</span><br><span class="line"> </span><br><span class="line"> fwrite($fp, $out);</span><br><span class="line"> <span class="comment">//echo fread($fp, 1024);</span></span><br><span class="line"> fclose($fp);</span><br><span class="line"> <span class="keyword">return</span> <span class="keyword">true</span>;</span><br><span class="line">}</span><br><span class="line"></span><br><span class="line">asynRequest(<span class="string">"www.doman.com"</span>); <span class="comment">//程序执行到这里的时候, 不会等待www.doman.com/api.php的返回结果，而是跳过等待。</span></span><br><span class="line"></span><br><span class="line"><span class="keyword">echo</span> <span class="number">1</span>; <span class="comment">// ?</span></span><br></pre></td></tr></table></figure>]]></content>
</entry>
<entry>
<title>玩玩截取查找字符串</title>
<link href="/2017/12/30/%E7%8E%A9%E7%8E%A9%E6%88%AA%E5%8F%96%E6%9F%A5%E6%89%BE%E5%AD%97%E7%AC%A6%E4%B8%B2/"/>
<url>/2017/12/30/%E7%8E%A9%E7%8E%A9%E6%88%AA%E5%8F%96%E6%9F%A5%E6%89%BE%E5%AD%97%E7%AC%A6%E4%B8%B2/</url>
<content type="html"><![CDATA[<figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br><span class="line">42</span><br><span class="line">43</span><br><span class="line">44</span><br><span class="line">45</span><br><span class="line">46</span><br><span class="line">47</span><br><span class="line">48</span><br><span class="line">49</span><br><span class="line">50</span><br><span class="line">51</span><br><span class="line">52</span><br><span class="line">53</span><br><span class="line">54</span><br><span class="line">55</span><br><span class="line">56</span><br><span class="line">57</span><br><span class="line">58</span><br><span class="line">59</span><br><span class="line">60</span><br><span class="line">61</span><br><span class="line">62</span><br><span class="line">63</span><br><span class="line">64</span><br><span class="line">65</span><br><span class="line">66</span><br><span class="line">67</span><br><span class="line">68</span><br><span class="line">69</span><br></pre></td><td class="code"><pre><span class="line"></span><br><span class="line"><span class="function"><span class="keyword">function</span> <span class="title">inNum</span><span class="params">()</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"><span class="keyword">echo</span> <span class="string">"enter money: "</span>;</span><br><span class="line">$num = trim(fgets(STDIN));</span><br><span class="line"></span><br><span class="line">$w = strpos($num, <span class="string">'w'</span>); <span class="comment">//记录下标</span></span><br><span class="line">$k = strpos($num, <span class="string">'k'</span>);</span><br><span class="line"> </span><br><span class="line"> <span class="keyword">if</span> ($w !== <span class="keyword">false</span>) {</span><br><span class="line"></span><br><span class="line"> $fast = mb_substr($num, <span class="number">0</span>, $w);</span><br><span class="line"> $wnum = (int)$fast . <span class="string">'0000'</span> . PHP_EOL;</span><br><span class="line"></span><br><span class="line"> <span class="keyword">if</span> ($k !== <span class="keyword">false</span>) { </span><br><span class="line"> $i = $k - $w - <span class="number">1</span>; <span class="comment">//w和k之间的位数</span></span><br><span class="line"> $kn = mb_substr($num, $w+<span class="number">1</span>, $i); </span><br><span class="line"> </span><br><span class="line"> <span class="keyword">if</span> ($kn <= <span class="number">9</span>) {</span><br><span class="line"> $kn = $kn . <span class="string">'000'</span>;</span><br><span class="line"> }</span><br><span class="line"> <span class="keyword">if</span> ($kn <= <span class="number">99</span>) {</span><br><span class="line"> $kn = $kn . <span class="string">'00'</span>;</span><br><span class="line"> }</span><br><span class="line"> <span class="keyword">if</span> ($kn <= <span class="number">999</span>) {</span><br><span class="line"> $kn = $kn. <span class="string">'0'</span>;</span><br><span class="line"> }</span><br><span class="line"></span><br><span class="line"> $len = strlen($num) - <span class="number">1</span>;</span><br><span class="line"> $mo = <span class="number">0</span>;</span><br><span class="line"> <span class="keyword">if</span> ($len > $k) { <span class="comment">//k后面还有数字</span></span><br><span class="line"> $mo = mb_substr($num, $k+<span class="number">1</span>); <span class="comment">//截取k后面的数字</span></span><br><span class="line"> <span class="keyword">if</span> (strlen($mo) < <span class="number">1</span>) {</span><br><span class="line"> $mo = $mo . <span class="string">'0'</span>;</span><br><span class="line"> }</span><br><span class="line"> }</span><br><span class="line"></span><br><span class="line"> <span class="keyword">echo</span> (int)$wnum + (int)$kn + (int)$mo . PHP_EOL;</span><br><span class="line"> <span class="keyword">die</span>;</span><br><span class="line"></span><br><span class="line"> }</span><br><span class="line"> <span class="keyword">echo</span> $wnum;</span><br><span class="line"></span><br><span class="line"> } <span class="keyword">elseif</span> ($k !== <span class="keyword">false</span>) {</span><br><span class="line"></span><br><span class="line"> $fast = mb_substr($num, <span class="number">0</span>, $k);</span><br><span class="line"> <span class="keyword">if</span> ($fast <= <span class="number">9</span>) {</span><br><span class="line"> $fast = $fast . <span class="string">'000'</span>;</span><br><span class="line"> }</span><br><span class="line"></span><br><span class="line"> <span class="keyword">if</span> ($fast <= <span class="number">99</span>) {</span><br><span class="line"> $fast = $fast . <span class="string">'00'</span>;</span><br><span class="line"> }</span><br><span class="line"></span><br><span class="line"> <span class="keyword">if</span> ($fast <= <span class="number">999</span>) {</span><br><span class="line"> $fast = $fast . <span class="string">'0'</span>;</span><br><span class="line"> }</span><br><span class="line"></span><br><span class="line"> <span class="keyword">echo</span> $fast . PHP_EOL;</span><br><span class="line"></span><br><span class="line"> } <span class="keyword">else</span> {</span><br><span class="line"></span><br><span class="line"> <span class="keyword">echo</span> $num . PHP_EOL; </span><br><span class="line"></span><br><span class="line"> }</span><br><span class="line">}</span><br><span class="line"></span><br><span class="line"></span><br><span class="line">inNum();</span><br></pre></td></tr></table></figure><h3 id="效果图"><a href="#效果图" class="headerlink" title="效果图"></a>效果图</h3><p><img src="https://sign-super.oss-cn-hangzhou.aliyuncs.com/shudun/num.png" alt="linear-gradient(90deg, red 25%, yellow 37%, red 63%)"></p>]]></content>
</entry>
<entry>
<title>php实现冒泡排序</title>
<link href="/2017/05/17/%E5%86%92%E6%B3%A1%E6%8E%92%E5%BA%8F/"/>
<url>/2017/05/17/%E5%86%92%E6%B3%A1%E6%8E%92%E5%BA%8F/</url>
<content type="html"><![CDATA[<p>冒泡排序的概念, 就是相邻的元素进行比较, 条件成立交换位置</p><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br></pre></td><td class="code"><pre><span class="line"><span class="meta"><?php</span></span><br><span class="line"><span class="function"><span class="keyword">function</span> <span class="title">simpleSort</span><span class="params">(array $data)</span> </span>{</span><br><span class="line"><span class="comment">//从第一个元素开始比较</span></span><br><span class="line"><span class="keyword">for</span> ($i = <span class="number">0</span>, $count = count($data); $i < $count; $i++) { </span><br><span class="line"><span class="comment">//跟相邻的元素比较</span></span><br><span class="line"><span class="keyword">for</span> ($n = $i + <span class="number">1</span>; $n < $count; $n++) {</span><br><span class="line"><span class="keyword">if</span> ($data[$i] < $data[$n]) {</span><br><span class="line"><span class="comment">//满足条件就交换位置</span></span><br><span class="line"><span class="keyword">list</span>($data[$i], $data[$n]) = [$data[$n], $data[$i]];</span><br><span class="line">}</span><br><span class="line">}</span><br><span class="line">}</span><br><span class="line"></span><br><span class="line"><span class="keyword">return</span> $data;</span><br><span class="line">}</span><br><span class="line"></span><br><span class="line">print_r(simpleSort([<span class="number">1</span>,<span class="number">12</span>,<span class="number">6</span>,<span class="number">33</span>,<span class="number">7</span>,<span class="number">47</span>,<span class="number">66</span>,<span class="number">84</span>,<span class="number">51</span>]));</span><br><span class="line"><span class="meta">?></span></span><br></pre></td></tr></table></figure><p>运行结果:<br><code>Array( [0] => 84 [1] => 66 [2] => 51 [3] => 47 [4] => 33 [5] => 12 [6] => 7 [7] => 6 [8] => 1)</code></p>]]></content>
</entry>
<entry>
<title>微测foreach和array_map的执行速度</title>
<link href="/2017/01/17/%E5%BE%AE%E6%B5%8Bforeach%E5%92%8Carray-map%E7%9A%84%E6%89%A7%E8%A1%8C%E9%80%9F%E5%BA%A6/"/>
<url>/2017/01/17/%E5%BE%AE%E6%B5%8Bforeach%E5%92%8Carray-map%E7%9A%84%E6%89%A7%E8%A1%8C%E9%80%9F%E5%BA%A6/</url>
<content type="html"><![CDATA[<p><code>foreach</code> 和 <code>array_map</code> 谁的执行速度比较快? 今天闲的蛋疼, 写了个小demo test</p><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br><span class="line">42</span><br><span class="line">43</span><br><span class="line">44</span><br><span class="line">45</span><br><span class="line">46</span><br><span class="line">47</span><br><span class="line">48</span><br><span class="line">49</span><br></pre></td><td class="code"><pre><span class="line"><span class="meta"><?php</span></span><br><span class="line">$data = [</span><br><span class="line">[<span class="string">'name'</span> => <span class="string">'salina'</span>, <span class="string">'age'</span> => <span class="number">16</span>, <span class="string">'sex'</span> => <span class="number">0</span>, <span class="string">'status'</span> => <span class="number">0</span>],</span><br><span class="line">];</span><br><span class="line"></span><br><span class="line">ini_set(<span class="string">'memory_limit'</span>, <span class="string">'-1'</span>);</span><br><span class="line"><span class="keyword">for</span> ($i = <span class="number">0</span>; $i < <span class="number">9999999</span>; $i++) {</span><br><span class="line">array_push($data, [<span class="string">'name'</span> => <span class="string">'liya'</span> . $i, <span class="string">'age'</span> => <span class="number">22</span>, <span class="string">'sex'</span> => <span class="number">0</span>, <span class="string">'status'</span> =><span class="number">1</span>]);</span><br><span class="line">}</span><br><span class="line"></span><br><span class="line">$begin = microtime(<span class="keyword">true</span>);</span><br><span class="line">$data = array_map(<span class="function"><span class="keyword">function</span><span class="params">($v)</span> </span>{</span><br><span class="line"><span class="keyword">if</span> ($v[<span class="string">'status'</span>] === <span class="number">1</span>) { <span class="comment">//一些简单的转换</span></span><br><span class="line">$v[<span class="string">'status'</span>] = <span class="string">'激活'</span>;</span><br><span class="line">} <span class="keyword">else</span> {</span><br><span class="line">$v[<span class="string">'status'</span>] = <span class="string">'禁用'</span>;</span><br><span class="line">}</span><br><span class="line"></span><br><span class="line"><span class="keyword">if</span> ($v[<span class="string">'sex'</span>] === <span class="number">1</span>) {</span><br><span class="line">$v[<span class="string">'sex'</span>] = <span class="string">'男'</span>;</span><br><span class="line">} <span class="keyword">else</span> {</span><br><span class="line">$v[<span class="string">'sex'</span>] = <span class="string">'女'</span>;</span><br><span class="line">}</span><br><span class="line"></span><br><span class="line"><span class="keyword">return</span> $v;</span><br><span class="line">}, $data);</span><br><span class="line">$end = microtime(<span class="keyword">true</span>);</span><br><span class="line"></span><br><span class="line">$min = microtime(<span class="keyword">true</span>);</span><br><span class="line"><span class="keyword">foreach</span> ($data <span class="keyword">as</span> $k => &$v) {</span><br><span class="line"><span class="keyword">if</span> ($v[<span class="string">'status'</span>] === <span class="number">1</span>) {</span><br><span class="line">$v[<span class="string">'status'</span>] = <span class="string">'激活'</span>;</span><br><span class="line">} <span class="keyword">else</span> {</span><br><span class="line">$v[<span class="string">'status'</span>] = <span class="string">'禁用'</span>;</span><br><span class="line">}</span><br><span class="line"></span><br><span class="line"><span class="keyword">if</span> ($v[<span class="string">'sex'</span>] === <span class="number">1</span>) {</span><br><span class="line">$v[<span class="string">'sex'</span>] = <span class="string">'男'</span>;</span><br><span class="line">} <span class="keyword">else</span> {</span><br><span class="line">$v[<span class="string">'sex'</span>] = <span class="string">'女'</span>;</span><br><span class="line">}</span><br><span class="line"></span><br><span class="line">}</span><br><span class="line">$max = microtime(<span class="keyword">true</span>);</span><br><span class="line"></span><br><span class="line"><span class="keyword">echo</span> <span class="string">'array_map time: '</span> . ($end - $begin) . PHP_EOL;</span><br><span class="line"><span class="keyword">echo</span> <span class="string">'foreach time: '</span> . ($max - $min) . PHP_EOL;</span><br><span class="line"></span><br><span class="line"><span class="meta">?></span></span><br></pre></td></tr></table></figure><p>执行几次测试结果:<br><code>array_map time: 5.3077862262726</code><br><code>foreach time: 2.8736588954926</code><br>——————————————————-华丽的分割线<br><code>array_map time: 8.4756429195404</code><br><code>foreach time: 12.029865980148</code><br>——————————————————-华丽的分割线2<br><code>array_map time: 5.2941391468048</code><br><code>foreach time: 2.8984580039978</code><br>——————————————————-华丽的分割线3<br><code>array_map time: 5.5151488780975</code><br><code>foreach time: 7.3730530738831</code><br>——————————————————-华丽的分割线4<br><code>array_map time: 5.3060140609741</code><br><code>foreach time: 2.8992168903351</code><br>——————————————————-华丽的分割线5<br><code>array_map time: 5.3467030525208</code><br><code>foreach time: 5.5229871273041</code><br>——————————————————-华丽的分割线6</p><p>结局并不是很理想…</p>]]></content>
</entry>
<entry>
<title>闲聊打怪升级之路</title>
<link href="/2016/12/31/%E9%97%B2%E8%81%8A%E6%89%93%E6%80%AA%E5%8D%87%E7%BA%A7%E4%B9%8B%E8%B7%AF/"/>
<url>/2016/12/31/%E9%97%B2%E8%81%8A%E6%89%93%E6%80%AA%E5%8D%87%E7%BA%A7%E4%B9%8B%E8%B7%AF/</url>
<content type="html"><![CDATA[<p>比如翻文档的时候, 你遇到了这个数组array_walk？what ?这是干啥的。 然后本着不弄明白不回头的心情点开进去看了下介绍如下<br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br></pre></td><td class="code"><pre><span class="line">array_walk ( <span class="keyword">array</span> &$array , callable $callback [, mixed $userdata = <span class="keyword">NULL</span> ] ) : bool</span><br><span class="line">将用户自定义函数 funcname 应用到 <span class="keyword">array</span> 数组中的每个单元。</span><br><span class="line"></span><br><span class="line">array_walk() 不会受到 <span class="keyword">array</span> 内部数组指针的影响。array_walk() 会遍历整个数组而不管指针的位置。</span><br></pre></td></tr></table></figure><br>哦 callback? callback是啥， 于是乎跳转链接google回调函数->搜到了匿名函数, 匿名函数是啥？ 跳回了手册 搜索匿名函数。<br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br></pre></td><td class="code"><pre><span class="line">匿名函数（Anonymous functions，也叫闭包函数（closures），允许 临时创建一个没有指定名称的函数。最经常用作回调函数（callback）参数的值。当然，也有其它应用的情况。</span><br><span class="line"></span><br><span class="line">匿名函数目前是通过 Closure 类来实现的。</span><br></pre></td></tr></table></figure><br>哦，闭包函数? 闭包函数是啥, 于是乎继续往下翻, 这时候忽然又发现了个叫协程的好玩意。 听起来就有兴趣学习</p><p>最后…协程是什么, 怎么怎么看着看着又推荐我swoole。 </p><p>swoole是啥? 打开一看 哦。。swoole是个用c写的php的扩展。。。</p><p>于是git clone swoole.git到本地..</p><p><img src="https://ss2.bdstatic.com/70cFvnSh_Q1YnxGkpoWK1HF6hhy/it/u=2892676305,1854844533&fm=26&gp=0.jpg" alt="linear-gradient(50deg, red 25%, yellow 37%, red 63%)"></p>]]></content>
</entry>
<entry>
<title>mysql远程登录</title>
<link href="/2016/12/20/mysql%E8%BF%9C%E7%A8%8B%E7%99%BB%E5%BD%95/"/>
<url>/2016/12/20/mysql%E8%BF%9C%E7%A8%8B%E7%99%BB%E5%BD%95/</url>
<content type="html"><![CDATA[<p>如果设置了mysql的host为%，并且在/etc/my.conf下吧bind=address=120.0.0.1注释了<br>还是登录不了的话 可能是服务器运营商的安全组设置问题</p><p>其实整体思路就是用测试工具连接看是否能连接</p><p>我这里用了nc ip port<br>比如<br><code>php$ nc 44.56.34.33 3306</code></p><p>如果提示连接失败就是以上的原因了</p><p><img src="https://sign-super.oss-cn-hangzhou.aliyuncs.com/shudun/shudun.jpg" alt="linear-gradient(10deg, red 25%, yellow 37%, red 63%)"></p>]]></content>
</entry>
</search>