在Web开发中，无论是PHP的框架还是Python的框架，都会遇到使用模板的时候，在使用模板的时候就会遇到一个问题，就是使用模板编写的代码通过查看源代码的时候，会发现代码混乱不堪，对于代码格式又嫉妒追求的我来说我因受不了，但是目前也没有找到什么好的格式化输出的办法
但是格式化输出的话，也会需要处理一个压缩的问题，最终还是选择一个方案，开发的时候为了查看代码修改代码，就不做处理，但是上线的时候还是要做下压缩的处理，就是将无用的空格或者换行之类的全部删除掉。
问题前提已经抛出，现在看看如何解决这个问题，为了防止重复早轮子网上也查了一遍，结果也找到了，但是用composer安装的时候又是各种的不兼容，于是看了下源代码，其实很简单。这里我就简答的说下如何使用
<?phpnamespace app/components;use app/helpers/HtmlMinifyHelper;use Yii;use yii/base/Component;use yii/base/Event;use yii/web/Response;use yii/web/View;class HtmlMinify extends Component{ /** * Minify html. Process before response send * @var bool */ public $html = false; /** * Minify css on page, added by registerCss. Process before render page in view component * @var bool */ public $css = false; /** * Minify css on page. Process before render page in view component * @var bool */ public $js = false; /** * Response formats list, where enable minify html * @var array */ public $formats = [ Response::FORMAT_HTML, ]; public function init() { /** @var $this View */ Yii::$app->view->on(View::EVENT_END_PAGE, [$this, 'onEventEndPage']); Yii::$app->response->on(Response::EVENT_BEFORE_SEND, [$this, 'onEventBeforeSend']); } public function onEventEndPage(Event $event) { $view = $event->sender; if ($this->css && !empty($view->css)) { foreach ($view->css as &$css) { $css = HtmlMinifyHelper::css($css); } } if ($this->js && !empty($view->js)) { foreach ($view->js as &$list) { foreach ($list as &$js) { $js = HtmlMinifyHelper::js($js); } } } } public function onEventBeforeSend(Event $event) { $response = $event->sender; if ($this->html & in_array($response->format, $this->formats)) { if (!empty($response->data)) { $response->data = HtmlMinifyHelper::html($response->data); } if (!empty($response->content)) { $response->content = HtmlMinifyHelper::html($response->content); } } }} <?phpnamespace app/helpers;class HtmlMinifyHelper{ public static function html($input) { if (trim($input) === "") { return $input; } // Remove extra white-space(s) between HTML attribute(s) $input = preg_replace_callback('#<([^///s<>!]+)(?:/s+([^<>]*?)/s*|/s*)(//?)>#s', function ($matches) { return '<' . $matches[1] . preg_replace('#([^/s=]+)(/=([/'"]?)(.*?)/3)?(/s+|$)#s', ' $1$2', $matches[2]) . $matches[3] . '>'; }, str_replace("/r", "", $input)); // Minify inline CSS declaration(s) if (strpos($input, ' style=') !==false){ $input=preg_replace_callback('#<([^<]+?)/s+style=([/'"])(.*?)/2(?=[///s>])#s',function ($matches){ return '<' . $matches[1] . ' style=' . $matches[2] . self::css($matches[3]) . $matches[2]; }, $input); } return preg_replace( [ // t = text // o = tag open // c = tag close // Keep important white-space(s) after self-closing HTML tag(s) '#<(img|input)(>| .*?>)#s', // Remove a line break and two or more white-space(s) between tag(s) '#(<!--.*?-->)|(>)(?:/n*|/s{2,})(<)|^/s*|/s*$#s', '#(<!--.*?-->)|(?<!/>)/s+(<//.*?>)|(<[^//]*?>)/s+(?!/<)#s', // t+c || o+t '#(<!--.*?-->)|(<[^//]*?>)/s+(<[^//]*?>)|(<//.*?>)/s+(<//.*?>)#s', // o+o || c+c '#(<!--.*?-->)|(<//.*?>)/s+(/s)(?!/<)|(?<!/>)/s+(/s)(<[^//]*?//?>)|(<[^//]*?//?>)/s+(/s)(?!/<)#s', // c+t || t+o || o+t -- separated by long white-space(s) '#(<!--.*?-->)|(<[^//]*?>)/s+(<//.*?>)#s', // empty tag '#<(img|input)(>| .*?>)<///1>#s', // reset previous fix '#( ) (?![</s])#', // clean up ... '#(?<=/>)( )(?=/<)#', // --ibid // Remove HTML comment(s) except IE comment(s) '#/s*<!--(?!/[if/s).*?-->/s*|(?<!/>)/n+(?=/<[^!])#s', ], [ '<$1$2</$1>', '$1$2$3', '$1$2$3', '$1$2$3$4$5', '$1$2$3$4$5$6$7', '$1$2$3', '<$1$2', '$1 ', '$1', "", ], $input); } public static function css($input) { if (trim($input) === "") { return $input; } return preg_replace( [ // Remove comment(s) '#("(?:[^"///]++|///.)*+"|/'(?:[^/'////]++|///.)*+/')|///*(?!/!)(?>.*?/*//)|^/s*|/s*$#s', // Remove unused white-space(s) '#("(?:[^"///]++|///.)*+"|/'(?:[^/'////]++|///.)*+/'|///*(?>.*?/*//))|/s*+;/s*+(})/s*+|/s*+([*$~^|]?+=|[{};,>~+]|/s*+-(?![0-9/.])|!important/b)/s*+|([[(:])/s++|/s++([])])|/s++(:)/s*+(?!(?>[^{}"/']++|"(?:[^"///]++|///.)*+"|/'(?:[^/'////]++|///.)*+/')*+{)|^/s++|/s++/z|(/s)/s+#si', // Replace `0(cm|em|ex|in|mm|pc|pt|px|vh|vw|%)` with `0` '#(?<=[/s:])(0)(cm|em|ex|in|mm|pc|pt|px|vh|vw|%)#si', // Replace `:0 0 0 0` with `:0` '#:(0/s+0|0/s+0/s+0/s+0)(?=[;/}]|/!important)#i', // Replace `background-position:0` with `background-position:0 0` '#(background-position):0(?=[;/}])#si', // Replace `0.6` with `.6`, but only when preceded by `:`, `,`, `-` or a white-space '#(?<=[/s:,/-])0+/.(/d+)#s', // Minify string value '#(///*(?>.*?/*//))|(?<!content/:)([/'"])([a-z_][a-z0-9/-_]*?)/2(?=[/s/{/}/];,])#si', '#(///*(?>.*?/*//))|(/burl/()([/'"])([^/s]+?)/3(/))#si', // Minify HEX color code '#(?<=[/s:,/-]/#)([a-f0-6]+)/1([a-f0-6]+)/2([a-f0-6]+)/3#i', // Replace `(border|outline):none` with `(border|outline):0` '#(?<=[/{;])(border|outline):none(?=[;/}/!])#', // Remove empty selector(s) '#(///*(?>.*?/*//))|(^|[/{/}])(?:[^/s/{/}]+)/{/}#s', ], [ '$1', '$1$2$3$4$5$6$7', '$1', ':0', '$1:0 0', '.$1', '$1$3', '$1$2$4$5', '$1$2$3', '$1:0', '$1$2', ], $input); } public static function js($input) { if (trim($input) === "") { return $input; } return preg_replace( [ // Remove comment(s) '#/s*("(?:[^"///]++|///.)*+"|/'(?:[^/'////]++|///.)*+/')/s*|/s*///*(?!/!|@cc_on)(?>[/s/S]*?/*//)/s*|/s*(?<![/:/=])////.*(?=[/n/r]|$)|^/s*|/s*$#', // Remove white-space(s) outside the string and regex '#("(?:[^"///]++|///.)*+"|/'(?:[^/'////]++|///.)*+/'|///*(?>.*?/*//)|//(?!//)[^/n/r]*?//(?=[/s.,;]|[gimuy]|$))|/s*([!%&*/(/)/-=+/[/]/{/}|;:,.<>?//])/s*#s', // Remove the last semicolon '#;+/}#', // Minify object attribute(s) except JSON attribute(s). From `{'foo':'bar'}` to `{foo:'bar'}` '#([/{,])([/'])(/d+|[a-z_][a-z0-9_]*)/2(?=/:)#i', // --ibid. From `foo['bar']` to `foo.bar` '#([a-z0-9_/)/]])/[([/'"])([a-z_][a-z0-9_]*)/2/]#i', ], [ '$1', '$1$2', '}', '$1$3', '$1.$3', ], $input); }} 以上所述是小编给大家介绍的Yii2压缩PHP中模板代码的输出问题，希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对VeVb武林网网站的支持！
