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24个可能你现在用不到，但应该了解的 PHP 库

时间 2015-09-08 14:13:00 linux中国

原文 http://linux.cn/article-6158-rss.html

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作为一个PHP开发者，现在是一个令人激动的时刻。每天有许许多多有用的库分发出来，在 Github 上很容易发现和使用这些库。下面是我曾经遇到过最酷的24个库。你最喜欢的库没有在这个列表里面？那就在评论中分享吧！

1. Dispatch – 微框架

Dispatch 是一个PHP小框架。它并没有给你完整的MVC设置，但你可以定义URL规则和方法，以便更好组织应用程序。这对API、简单的站点或原型来说是完美的。

<codeCourier New',monospace; border:0px; display:block; overflow-y:auto"><span>//包含库</span><span>include</span><span>'dispatch.php'</span>;
 
<span>// 定义你的路由</span>
get(<span>'/greet'</span>, <span><span>function</span><span>()</span> {</span><span>//渲染视图</span>
    render(<span>'greet-form'</span>);
});
 
<span>//post处理</span>
post(<span>'/greet'</span>, <span><span>function</span><span>()</span> {</span><span>$name</span> = from(<span>$_POST</span>, <span>'name'</span>);
  
<span>// render a view while passing some locals</span>
    render(<span>'greet-show'</span>, <span>array</span>(<span>'name'</span> => <span>$name</span>));
});
 
<span>// serve your site</span>
dispatch();</code>

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你可以匹配特定类型的HTTP请求和路径，渲染视图或做更多事情。如果你合并Dispatch和其他框架，那你就可以拥有一个相当强大并且轻量级的程序！

2. Klein – PHP快如闪电的路由

Klein 是另一款针对PHP5.3+版本的轻量级路由库。虽然它有一些比Dispatch冗长的语法，但它相当快。这有一个例子：

<codeCourier New',monospace; border:0px; display:block; overflow-y:auto">respond(<span>'/[:name]'</span>, <span><span>function</span><span>(<span>$request</span>)</span> {</span><span>echo</span><span>'Hello '</span> . <span>$request</span>->name;
});</code>

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你也可以定制来指定HTTP方法和使用正则表达式作为路径。

<codeCourier New',monospace; border:0px; display:block; overflow-y:auto">respond(<span>'GET'</span>, <span>'/posts'</span>, <span>$callback</span>);
respond(<span>'POST'</span>, <span>'/posts/create'</span>, <span>$callback</span>);
respond(<span>'PUT'</span>, <span>'/posts/[i:id]'</span>, <span>$callback</span>);
respond(<span>'DELETE'</span>, <span>'/posts/[i:id]'</span>, <span>$callback</span>);
 
<span>//匹配多种请求方法:</span>
respond(<span>array</span>(<span>'POST'</span>,<span>'GET'</span>), <span>$route</span>, <span>$callback</span>);
 
<span>//你或许也想在相同的地方处理请求</span>
respond(<span>'/posts/[create|edit:action] /[i:id] '</span>, <span><span>function</span><span>(<span>$request</span>, <span>$response</span>)</span> {</span><span>switch</span> (<span>$request</span>->action) {
        
<span>// do something</span>
    }
});</code>

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对于小型项目来说这是很棒的，但当你把一个像这样的库用于大型应用时，你不得不遵守规矩，因为你的代码可能很快就变得不可维护。所以你最好搭配一个像 Laravel或者 CodeIgniter 这样完全成熟的框架。

3. Ham – 带缓存的路由库

Ham 也是一款轻量级的路由框架，但是它利用缓存甚至获得了更快的速度。它通过把任何I/O相关的东西缓存进XCache/APC。下面是一个例子：

<codeCourier New',monospace; border:0px; display:block; overflow-y:auto"><span>require</span><span>'../ham/ham.php'</span>;
<span>$app</span> = new Ham(<span>'example'</span>);
<span>$app</span>->config_from_file(<span>'settings.php'</span>);
<span>$app</span>->route(<span>'/pork'</span>, function(<span>$app</span>) {
<span></span><span>return</span><span>"Delicious pork."</span>;
});
<span>$hello</span> = function(<span>$app</span>, <span>$name</span>=<span>'world'</span>) {
<span></span><span>return</span><span>$app</span>->render(<span>'hello.html'</span>, array(
<span></span><span></span><span>'name'</span> => <span>$name</span><span></span>));
};
<span>$app</span>->route(<span>'/hello/<string>'</span>, <span>$hello</span>);
<span>$app</span>->route(<span>'/'</span>, <span>$hello</span>);
<span>$app</span>->run();</code>

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这个库要求你至少安装了XCache和APC其中的一个，这可能意味着，在大多数主机提供商提供的主机上它可能用不了。但是如果你拥有一个安装它们其一的主机，或者你可以操控你的web服务器，你应该尝试这款最快的框架。

4. Assetic – 资源管理

Assetic 是一个PHP的资源管理框架，用于合并和减小了CSS/JS资源。下面是例子。

<codeCourier New',monospace; border:0px; display:block; overflow-y:auto"><span>use</span> Assetic\Asset\AssetCollection;
<span>use</span> Assetic\Asset\FileAsset;
<span>use</span> Assetic\Asset\GlobAsset;
 
<span>$js</span> = <span>new</span> AssetCollection(<span>array</span>(
    <span>new</span> GlobAsset(<span>'/path/to/js/*'</span>),
    <span>new</span> FileAsset(<span>'/path/to/another.js'</span>),
));
 
<span>//当资源被输出时，代码会被合并</span><span>echo</span><span>$js</span>->dump();</code>

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以这种方式合并资源是一个好主意，因为它可以加速站点。不仅仅总下载量减小了，也消除了大量不必要的HTTP请求(这是最影响页面加载时间的两件事)

5. ImageWorkshop – 带层的图片处理

ImageWorkshop 是一个让你操控带层图片的开源库。借助它你可以重定义尺寸、裁剪、制作缩略图、打水印或做更多事情。下面是一个例子：

<codeCourier New',monospace; border:0px; display:block; overflow-y:auto"><span>// 从norway.jpg图片初始化norway层</span><span>$norwayLayer</span> = ImageWorkshop::initFromPath(<span>'/path/to/images/norway.jpg'</span>); 
 
<span>// 从watermark.png图片初始化watermark层(水印层)</span><span>$watermarkLayer</span> = ImageWorkshop::initFromPath(<span>'/path/to/images/watermark.png'</span>); 
 
<span>$image</span> = <span>$norwayLayer</span>->getResult(); 
<span>// 这是生成的图片!</span>header(<span>'Content-type: image/jpeg'</span>);
imagejpeg(<span>$image</span>, <span>null</span>, <span>95</span>); 
<span>// We choose to show a JPG with a quality of 95%</span><span>exit</span>;</code>

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ImageWorkshop被开发用于使一些PHP中最通用的处理图片的案例简化，如果你需要一些更强大的东西，你应该看下 Imagine library ！

6. Snappy – 快照/PDF库

Snappy 是一个PHP5库，可以生成快照、URL、HTML、PDF。它依赖于wkhtmltopdf binary（在Linux，Windows和OSX上都可用）。你可以像这样使用它们：

<codeCourier New',monospace; border:0px; display:block; overflow-y:auto"><span>require_once</span><span>'/path/to/snappy/src/autoload.php'</span>; 
 
<span>use</span> Knp\Snappy\Pdf; 
 
<span>//通过wkhtmltopdf binary路径初始化库</span><span>$snappy</span> = <span>new</span> Pdf(<span>'/usr/local/bin/wkhtmltopdf'</span>); 
 
<span>//通过把Content-type头设置为pdf来在浏览器中展示pdf</span>header(<span>'Content-Type: application/pdf'</span>);
header(<span>'Content-Disposition: attachment; filename="file.pdf"'</span>); 
 
<span>echo</span><span>$snappy</span>->getOutput(<span>'http://www.github.com'</span>);</code>

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要注意，你的主机提供商可能不允许调用外部二进制程序。

7. Idiorm – 轻量级ORM库

Idiorm 是个人之前在本网站教程中用过最喜爱的一款。它是一款轻量级的ORM库，一个建立在PDO之上的PHP5查询构造器。借助它，你可以忘记如何书写乏味的SQL：

<codeCourier New',monospace; border:0px; display:block; overflow-y:auto"><span>$user</span> = ORM::for_table(<span>'user'</span>)
<span></span>->where_equal(<span>'username'</span>, <span>'j4mie'</span>)
<span></span>->find_one();
<span>$user</span>->first_name = <span>'Jamie'</span>;
<span>$user</span>->save();
<span>$tweets</span> = ORM::for_table(<span>'tweet'</span>)
<span></span>->select(<span>'tweet.*'</span>)
<span></span>->join(<span>'user'</span>, array(
<span></span><span></span><span>'user.id'</span>, <span>'='</span>, <span>'tweet.user_id'</span><span></span>))
<span></span>->where_equal(<span>'user.username'</span>, <span>'j4mie'</span>)
<span></span>->find_many();
<span>foreach</span> (<span>$tweets</span> as <span>$tweet</span>) {
<span></span>echo <span>$tweet</span>->text;
}</code>

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Idiorm有一个姊妹库叫 Paris ， Paris 是一个基于Idiorm的Active Record实现。

8. Underscore – PHP的工具腰带

Underscore 是原始 Underscore.js 的一个接口 – Javascript应用的工具腰带。PHP版本没有让人失望，而且支持了几乎所有原生功能。下面是一些例子：

<codeCourier New',monospace; border:0px; display:block; overflow-y:auto">__::each(<span>array</span>(<span>1</span>, <span>2</span>, <span>3</span>), function(<span>$num</span>) { <span>echo</span><span>$num</span> . <span>','</span>; }); 
<span>// 1,2,3,</span><span>$multiplier</span> = <span>2</span>;
__::each(<span>array</span>(<span>1</span>, <span>2</span>, <span>3</span>), function(<span>$num</span>, <span>$index</span>) <span>use</span> (<span>$multiplier</span>) {
  <span>echo</span><span>$index</span> . <span>'='</span> . (<span>$num</span> * <span>$multiplier</span>) . <span>','</span>;
});
<span>// prints: 0=2,1=4,2=6,</span>__::reduce(<span>array</span>(<span>1</span>, <span>2</span>, <span>3</span>), function(<span>$memo</span>, <span>$num</span>) { <span>return</span><span>$memo</span> &#43; <span>$num</span>; }, <span>0</span>); 
<span>// 6</span>__::find(<span>array</span>(<span>1</span>, <span>2</span>, <span>3</span>, <span>4</span>), function(<span>$num</span>) { <span>return</span><span>$num</span> % <span>2</span> === <span>0</span>; }); 
<span>// 2</span>__::filter(<span>array</span>(<span>1</span>, <span>2</span>, <span>3</span>, <span>4</span>), function(<span>$num</span>) { <span>return</span><span>$num</span> % <span>2</span> === <span>0</span>; }); 
<span>// array(2, 4)</span></code>

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这个库也支持链式语法，这使得它更为强大。

9. Requests – 简单HTTP请求

Requests 是一个简化HTTP请求的库。如果你和我一样，几乎从来都记不住传递给Curl的各种各样的参数，那么它就是为你准备的：

<codeCourier New',monospace; border:0px; display:block; overflow-y:auto"><span>$headers</span> = <span>array</span>(<span>'Accept'</span> => <span>'application/json'</span>);
<span>$options</span> = <span>array</span>(<span>'auth'</span> => <span>array</span>(<span>'user'</span>, <span>'pass'</span>));
<span>$request</span> = Requests::get(<span>'https://api.github.com/gists'</span>, <span>$headers</span>, <span>$options</span>);
 
var_dump(<span>$request</span>->status_code);
<span>// int(200)</span>var_dump(<span>$request</span>->headers[<span>'content-type'</span>]);
<span>// string(31) "application/json; charset=utf-8"</span>var_dump(<span>$request</span>->body);
<span>// string(26891) "[…]"</span></code>

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借助这个库，你可以发送HEAD、GET、POST、PUT、DELTE和PATCH HTTP请求，你可以通过数组添加文件和参数，并且可以访问所有相应数据。

10. Buzz – 简单的HTTP请求库

Buzz 是另一个完成HTTP请求的库。下面是一个例子：

<codeCourier New',monospace; border:0px; display:block; overflow-y:auto"><span>$request</span> = <span>new</span> Buzz\Message\Request(<span>'HEAD'</span>, <span>'/'</span>, <span>'http://google.com'</span>);
<span>$response</span> = <span>new</span> Buzz\Message\Response();
 
<span>$client</span> = <span>new</span> Buzz\Client\FileGetContents();
<span>$client</span>->send(<span>$request</span>, <span>$response</span>);
 
<span>echo</span><span>$request</span>;
<span>echo</span><span>$response</span>;</code>

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因为它缺乏文档，所以你不得不阅读源码来获知它支持的所有参数。

11. Goutte – Web抓取库

Goutte 是一个抓取网站和提取数据的库。它提供了一个优雅的API，这使得从远程页面上选择特定元素变得简单。

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<codeCourier New',monospace; border:0px; display:block; overflow-y:auto">require_once <span>'/path/to/goutte.phar'</span>; 
 
<span>use</span> Goutte\Client; 
 
<span>$client</span> = new Client();
<span>$crawler</span> = <span>$client</span>->request(<span>'GET'</span>, <span>'http://www.symfony-project.org/'</span>); 
 
<span>//</span>点击链接
<span>$link</span> = <span>$crawler</span>->selectLink(<span>'Plugins'</span>)->link();
<span>$crawler</span> = <span>$client</span>->click(<span>$link</span>); 
 
<span>//</span>使用一个类CSS语法提取数据
<span>$t</span> = <span>$crawler</span>->filter(<span>'#data'</span>)->text(); 
 
echo <span>"Here is the text: <span>$t</span>"</span>;</code>

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12. Carbon – DateTime 库

Carbon 是 DateTime API 的一个简单扩展。

<codeCourier New',monospace; border:0px; display:block; overflow-y:auto"><span>printf</span>(<span>"Right now is <span>%s</span>"</span>, Carbon::now()->toDateTimeString());
<span>printf</span>(<span>"Right now in Vancouver is <span>%s</span>"</span>, Carbon::now(<span>'America/Vancouver'</span>));
 
<span>$tomorrow</span> = Carbon::now()->addDay();
<span>$lastWeek</span> = Carbon::now()->subWeek();
<span>$nextSummerOlympics</span> = Carbon::createFromDate(<span>2012</span>)->addYears(<span>4</span>);
 
<span>$officialDate</span> = Carbon::now()->toRFC2822String();
 
<span>$howOldAmI</span> = Carbon::createFromDate(<span>1975</span>, <span>5</span>, <span>21</span>)->age;
 
<span>$noonTodayLondonTime</span> = Carbon::createFromTime(<span>12</span>, <span>0</span>, <span>0</span>, <span>'Europe/London'</span>);
 
<span>$endOfWorld</span> = Carbon::createFromDate(<span>2012</span>, <span>12</span>, <span>21</span>, <span>'GMT'</span>);
 
<span>//</span>总是以UTC对比
<span>if</span> (Carbon::now()->gte(<span>$endOfWorld</span>)) {
    <span>die</span>();
}
 
<span>if</span> (Carbon::now()->isWeekend()) {
    echo <span>'Party!'</span>;
}
 
echo Carbon::now()->subMinutes(<span>2</span>)->diffForHumans(); 
<span>//</span><span>'2分钟之前'</span></code>

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13. Ubench – 微型基准库

Ubench 是一个用于评测PHP代码的微型库，可监控（代码）执行时间和内存使用率。下面是范例：

<codeCourier New',monospace; border:0px; display:block; overflow-y:auto"><span>use</span> Ubench\Ubench;
 
<span>$bench</span> = <span>new</span> Ubench;
 
<span>$bench</span>->start();
 
<span>//执行一些代码</span><span>$bench</span>->end();
 
<span>//获取执行消耗时间和内存</span><span>echo</span><span>$bench</span>->getTime(); 
<span>// 156ms or 1.123s</span><span>echo</span><span>$bench</span>->getTime(<span>true</span>); 
<span>// elapsed microtime in float</span><span>echo</span><span>$bench</span>->getTime(<span>false</span>, <span>'%d%s'</span>); 
<span>// 156ms or 1s</span><span>echo</span><span>$bench</span>->getMemoryPeak(); 
<span>// 152B or 90.00Kb or 15.23Mb</span><span>echo</span><span>$bench</span>->getMemoryPeak(<span>true</span>); 
<span>// memory peak in bytes 内存峰&#20540;</span><span>echo</span><span>$bench</span>->getMemoryPeak(<span>false</span>, <span>'%.3f%s'</span>); 
<span>// 152B or 90.152Kb or 15.234Mb</span><span>//在结束标识处返回内存使用情况</span><span>echo</span><span>$bench</span>->getMemoryUsage(); 
<span>// 152B or 90.00Kb or 15.23Mb</span></code>

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(仅)在开发时运行这些校验是一个好主意。

14. Validation – 输入验证引擎

Validation 声称是PHP库里最强大的验证引擎。但是，它能名副其实吗？看下面：

<codeCourier New',monospace; border:0px; display:block; overflow-y:auto"><span>use</span> Respect\Validation\Validator <span>as</span> v; 
 
<span>//简单验证</span><span>$number</span> = <span>123</span>;
v::numeric()->validate(<span>$number</span>); 
<span>//true </span><span>//链式验证</span><span>$usernameValidator</span> = v::alnum()->noWhitespace()->length(<span>1</span>,<span>15</span>);
<span>$usernameValidator</span>->validate(<span>'alganet'</span>); 
<span>//true </span><span>//验证对象属性</span><span>$user</span> = <span>new</span> stdClass;
<span>$user</span>->name = <span>'Alexandre'</span>;
<span>$user</span>->birthdate = <span>'1987-07-01'</span>; 
 
<span>//在一个简单链中验证他的属性</span><span>$userValidator</span> = v::attribute(<span>'name'</span>, v::string()->length(<span>1</span>,<span>32</span>))
                  ->attribute(<span>'birthdate'</span>, v::date()->minimumAge(<span>18</span>)); 
 
<span>$userValidator</span>->validate(<span>$user</span>); 
<span>//true</span></code>

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你可以通过这个库验证你的表单或其他用户提交的数据。除此之外，它内置了很多校验，抛出异常和定制错误信息。

15. Filterus – 过滤库

Filterus 是另一个过滤库，但它不仅仅可以验证，也可以过滤匹配预设模式的输出。下面是一个例子：

<codeCourier New',monospace; border:0px; display:block; overflow-y:auto"><span>$f</span> = Filter::factory(<span>'string,max:5'</span>);
<span>$str</span> = <span>'This is a test string'</span>; 
 
<span>$f</span>->validate(<span>$str</span>); 
<span>//</span> false
<span>$f</span>->filter(<span>$str</span>); 
<span>//</span><span>'This '</span></code>

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Filterus有很多内建模式，支持链式用法，甚至可以用独立的验证规则去验证数组元素。

16. Faker – 假数据生成器

Faker 是一个为你生成假数据的PHP库。当你需要填充一个测试数据库，或为你的web应用生成测试数据时，它能派上用场。它也非常容易使用：

<codeCourier New',monospace; border:0px; display:block; overflow-y:auto"><span>//引用Faker 自动加载器</span><span>require_once</span><span>'/path/to/Faker/src/autoload.php'</span>;
 
<span>//使用工厂创建来创建一个Faker\Generator实例</span><span>$faker</span> = Faker\Factory::create();
 
<span>//通过访问属性生成假数据</span><span>echo</span><span>$faker</span>->name; 
<span>// 'Lucy Cechtelar';</span><span>echo</span><span>$faker</span>->address;
  
<span>// "426 Jordy Lodge</span><span>// Cartwrightshire, SC 88120-6700"</span><span>echo</span><span>$faker</span>->text;
  
<span>// Sint velit eveniet. Rerum atque repellat voluptatem quia ...</span></code>

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只要你继续访问对象属性，它将继续返回随机生成的数据。

17. Mustache.php – 优雅模板库

Mustache是一款流行的模板语言，实际已经在各种编程语言中得到实现。使用它，你可以在客户端或服务段重用模板。正如你猜得那样， Mustache.php 是使用PHP实现的。

<codeCourier New',monospace; border:0px; display:block; overflow-y:auto"><span>$m</span> = <span>new</span> Mustache_Engine;
<span>echo</span><span>$m</span>->render(<span>'Hello {{planet}}'</span>, <span>array</span>(<span>'planet'</span> => <span>'World!'</span>)); 
<span>// "Hello World!"</span></code>

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建议看一下官方网站 Mustache docs 查看更多高级的例子。

18. Gaufrette – 文件系统抽象层

Gaufrette 是一个PHP5库，提供了一个文件系统的抽象层。它使得以相同方式操控本地文件，FTP服务器，亚马逊 S3或更多操作变为可能。它允许你开发程序时，不用了解未来你将怎么访问你的文件。

<codeCourier New',monospace; border:0px; display:block; overflow-y:auto"><span>use</span> Gaufrette\Filesystem;
<span>use</span> Gaufrette\Adapter\Ftp <span>as</span> FtpAdapter;
<span>use</span> Gaufrette\Adapter\Local <span>as</span> LocalAdapter; 
 
<span>//本地文件:</span><span>$adapter</span> = <span>new</span> LocalAdapter(<span>'/var/media'</span>); 
 
<span>//可选地使用一个FTP适配器</span><span>// $ftp = new FtpAdapter($path, $host, $username, $password, $port); </span><span>//初始化文件系统</span><span>$filesystem</span> = <span>new</span> Filesystem(<span>$adapter</span>); 
 
<span>//使用它</span><span>$content</span> = <span>$filesystem</span>->read(<span>'myFile'</span>);
<span>$content</span> = <span>'Hello I am the new content'</span>;
<span>$filesystem</span>->write(<span>'myFile'</span>, <span>$content</span>);</code>

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也有缓存和内存适配器，并且随后将会增加更多适配器。

19. Omnipay – 支付处理库

Omnipay 是一个PHP支付处理库。它有一个清晰一致的API，并且支持数十个网关。使用这个库，你仅仅需要学习一个API和处理各种各样的支付处理器。下面是一个例子：

<codeCourier New',monospace; border:0px; display:block; overflow-y:auto"><span>use</span> Omnipay\CreditCard;
<span>use</span> Omnipay\GatewayFactory;
 
<span>$gateway</span> = GatewayFactory::create(<span>'Stripe'</span>);
<span>$gateway</span>->setApiKey(<span>'abc123'</span>);
 
<span>$formData</span> = [<span>'number'</span> => <span>'4111111111111111'</span>, <span>'expiryMonth'</span> => <span>6</span>, <span>'expiryYear'</span> => <span>2016</span>];
<span>$response</span> = <span>$gateway</span>->purchase([<span>'amount'</span> => <span>1000</span>, <span>'card'</span> => <span>$formData</span>]);
 
<span>if</span> (<span>$response</span>->isSuccessful()) {
  
<span>//</span>支付成功:更新数据库
    print_r(<span>$response</span>);
} elseif (<span>$response</span>->isRedirect()) {
  
<span>//</span>跳转到异地支付网关
    <span>$response</span>->redirect();
} <span>else</span> {
  
<span>//</span>支付失败:向客户显示信息
    <span>exit</span>(<span>$response</span>->getMessage());
}</code>

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使用相同一致的API，可以很容易地支持多种支付处理器，或在需要时进行切换。

20. Upload – 处理文件上传

Upload 是一个简化文件上传和验证的库。上传表单时，这个库会校验文件类型和尺寸。

<codeCourier New',monospace; border:0px; display:block; overflow-y:auto"><span>$storage</span> = <span>new</span> \Upload\Storage\FileSystem(<span>'/path/to/directory'</span>);
<span>$file</span> = <span>new</span> \Upload\File(<span>'foo'</span>, <span>$storage</span>);
<span>//验证文件上传</span><span>$file</span>->addValidations(<span>array</span>(
<span>//确保文件类型是"image/png"</span><span></span><span>new</span> \Upload\Validation\Mimetype(<span>'image/png'</span>),
<span>//确保文件不超过5M(使用"B","K","M"或者"G")</span><span></span><span>new</span> \Upload\Validation\Size(<span>'5M'</span>)
));
<span>//试图上传文件</span><span>try</span> {
<span>//成功</span><span></span><span>$file</span>->upload();
} <span>catch</span> (\<span>Exception</span><span>$e</span>) {
<span>//失败!</span><span></span><span>$errors</span> = <span>$file</span>->getErrors();
}</code>

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它将减少不少乏味的代码。

21. HTMLPurifier – HTML XSS 防护

HTMLPurifier 是一个HTML过滤库，通过强大的白名单和聚集分析，保护你代码远离XSS攻击。它也确保输出标记符合标准。 (源码在github 上)

<codeCourier New',monospace; border:0px; display:block; overflow-y:auto"><span>require_once</span><span>'/path/to/HTMLPurifier.auto.php'</span>;
 
<span>$config</span> = HTMLPurifier_Config::createDefault();
<span>$purifier</span> = <span>new</span> HTMLPurifier(<span>$config</span>);
<span>$clean_html</span> = <span>$purifier</span>->purify(<span>$dirty_html</span>);
</code>

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如果你的网站允许用户提交 HTML 代码，不修改就展示代码的话，那这时候就是用这个库的时候了。

22. ColorJizz-PHP – 颜色操控库

ColorJizz 是一个简单的库，借助它你可以转换不同的颜色格式，并且做简单的颜色运算

<codeCourier New',monospace; border:0px; display:block; overflow-y:auto"><span>use</span> MischiefCollective\ColorJizz\Formats\Hex;
 
<span>$red_hex</span> = new Hex(<span>0xFF0000</span>);
<span>$red_cmyk</span> = <span>$hex</span>->toCMYK();
echo <span>$red_cmyk</span>; 
<span>//</span><span>0</span>,<span>1</span>,<span>1</span>,<span>0</span>echo Hex::fromString(<span>'red'</span>)->hue(-<span>20</span>)->greyscale(); 
<span>//</span><span>555555</span></code>

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它已经支持并且可以操控所有主流颜色格式了

23. PHP Geo – 地理位置定位库

phpgeo 是一个简单的库，用于计算地理坐标之间高精度距离。例如：

<codeCourier New',monospace; border:0px; display:block; overflow-y:auto"><span>use</span> Location\Coordinate;
<span>use</span> Location\Distance\Vincenty;
 
<span>$coordinate1</span> = <span>new</span> Coordinate(<span>19.820664</span>, -<span>155.468066</span>); 
<span>// Mauna Kea Summit 茂纳凯亚峰</span><span>$coordinate2</span> = <span>new</span> Coordinate(<span>20.709722</span>, -<span>156.253333</span>); 
<span>// Haleakala Summit</span><span>$calculator</span> = <span>new</span> Vincenty();
<span>$distance</span> = <span>$calculator</span>->getDistance(<span>$coordinate1</span>, <span>$coordinate2</span>); 
<span>// returns 128130.850 (meters; ≈128 kilometers)</span></code>

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它将在使用地理位置数据的app里出色工作。你可以试译 HTML5 Location API，雅虎的API（或两者都用，我们在 weather web app tutorial 中这样做了），来获取坐标。

24. ShellWrap – 优美的命令行包装器

借助 ShellWrap 库，你可以在PHP代码里使用强大的 Linux/Unix 命令行工具。

<codeCourier New',monospace; border:0px; display:block; overflow-y:auto"><span>require</span><span>'ShellWrap.php'</span>;
<span>use</span> \MrRio\ShellWrap <span>as</span> sh; 
 
<span>//列出当前文件下的所有文件</span><span>echo</span> sh::ls(); 
 
<span>//检出一个git分支</span>
sh::git(<span>'checkout'</span>, <span>'master'</span>); 
 
<span>//你也可以通过管道把一个命令的输出用户另一个命令</span><span>//下面通过curl跟踪位置，然后通过grep过滤’html’管道来下载example.com网站</span><span>echo</span> sh::grep(<span>'html'</span>, sh::curl(<span>'http://example.com'</span>, <span>array</span>(
    <span>'location'</span> => <span>true</span>
))); 
 
<span>//新建一个文件</span>
sh::touch(<span>'file.html'</span>); 
 
<span>//移除文件</span>
sh::rm(<span>'file.html'</span>); 
 
<span>//再次移除文件(这次失败了,然后因为文件不存在而抛出异常)</span><span>try</span> {
    sh::rm(<span>'file.html'</span>);
} <span>catch</span> (<span>Exception</span><span>$e</span>) {
    <span>echo</span><span>'Caught failing sh::rm() call'</span>;
}</code>

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当命令行里发生异常时，这个库抛出异常，所以你可以及时对之做出反应。它也可以通过管道让你一个命令的输出作为另一个命令的输入，来实现更强的灵活性。

以上就介绍了PHP库收集，包括了方面的内容，希望对PHP教程有兴趣的朋友有所帮助。