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71 lines
2.0 KiB
71 lines
2.0 KiB
<?php |
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/** |
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* @link http://www.yiiframework.com/ |
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* @copyright Copyright (c) 2008 Yii Software LLC |
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* @license http://www.yiiframework.com/license/ |
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*/ |
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namespace yii\widgets; |
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use yii\base\Widget; |
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/** |
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* Spaceless widget removes whitespace characters between HTML tags. Whitespaces within HTML tags |
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* or in a plain text are always left untouched. |
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* |
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* Usage example: |
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* |
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* ```php |
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* <body> |
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* <?php Spaceless::begin(); ?> |
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* <div class="nav-bar"> |
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* <!-- tags --> |
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* </div> |
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* <div class="content"> |
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* <!-- tags --> |
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* </div> |
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* <?php Spaceless::end(); ?> |
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* </body> |
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* ``` |
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* |
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* This example will generate the following HTML: |
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* |
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* ```html |
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* <body> |
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* <div class="nav-bar"><!-- tags --></div><div class="content"><!-- tags --></div></body> |
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* ``` |
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* |
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* This method is not designed for content compression (you should use `gzip` output compression to |
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* achieve it). Main intention is to strip out extra whitespace characters between HTML tags in order |
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* to avoid browser rendering quirks in some circumstances (e.g. newlines between inline-block elements). |
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* |
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* Note, never use this method with `pre` or `textarea` tags. It's not that trivial to deal with such tags |
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* as it may seem at first sight. For this case you should consider using |
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* [HTML Tidy Project](http://tidy.sourceforge.net/) instead. |
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* |
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* @see http://tidy.sourceforge.net/ |
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* @author resurtm <resurtm@gmail.com> |
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* @since 2.0 |
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*/ |
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class Spaceless extends Widget |
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{ |
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/** |
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* Starts capturing an output to be cleaned from whitespace characters between HTML tags. |
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*/ |
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public function init() |
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{ |
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parent::init(); |
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ob_start(); |
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ob_implicit_flush(false); |
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} |
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/** |
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* Marks the end of content to be cleaned from whitespace characters between HTML tags. |
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* Stops capturing an output and returns cleaned result. |
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* @return string the result of widget execution to be outputted. |
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*/ |
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public function run() |
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{ |
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return trim(preg_replace('/>\s+</', '><', ob_get_clean())); |
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} |
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}
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