About how to remove width and height styles in PHP using regular expressions-PHP Tutorial-php.cn

About how to remove width and height styles in PHP using regular expressions

jacklove

Release： 2023-03-30 22:06:02

Original

2187 people have browsed it

Due to work needs, it is necessary to collect html and save the html content into the database. In order to avoid affecting usage, the width and height styles need to be deleted. For example, width, height, etc. in pictures and p.

However, in the collected HTML, the styles are written differently, such as upper and lower case, spaces in the middle, etc.

So I wrote the following method using PHP regular to filter these weird styles.

The code is as follows:

<?php/**
 * 清除宽高样式
 * @param  String $content 内容
 * @return String
 */function clear_wh($content){
    $config = array(&#39;width&#39;, &#39;height&#39;);    foreach($config as $v){        $content = preg_replace(&#39;/&#39;.$v.&#39;\s*=\s*\d+\s*/i&#39;, &#39;&#39;, $content);        $content = preg_replace(&#39;/&#39;.$v.&#39;\s*=\s*.+?["\&#39;]/i&#39;, &#39;&#39;, $content);        $content = preg_replace(&#39;/&#39;.$v.&#39;\s*:\s*\d+\s*px\s*;?/i&#39;, &#39;&#39;, $content);
    }    return $content;
}?>

Copy after login

Demo:

<?php$html = <<<HTML
<p style="text-align:center" width="500" height="300">
    <p style="Width : 100px ; Height: 100 px;">
        <img src="/images/test.jpg" width=400 height = 200>
        <p style="float:left; width: 100px; height : 200 px;"></p>
    </p>
    <p style="width :   100 px ;height: 100px">
        <img src="/images/test.jpg" width=400 height = 200>
    </p>
</p>
HTML;echo &#39;<xmp>&#39;;echo &#39;原内容：&#39;.PHP_EOL;echo $html.PHP_EOL.PHP_EOL;echo &#39;过滤后内容：&#39;.PHP_EOL;echo clear_wh($html);echo &#39;</xmp>&#39;;
?>

Copy after login

Output:

原内容：<p style="text-align:center" width="500" height="300">
    <p style="Width : 100px ; Height: 100 px;">
        <img src="/images/test.jpg" width=400 height = 200>
        <p style="float:left; width: 100px; height : 200 px;"></p>
    </p>
    <p style="width :   100 px ;height: 100px">
        <img src="/images/test.jpg" width=400 height = 200>
    </p></p>过滤后内容：<p style="text-align:center"  >
    <p style=" ">
        <img src="/images/test.jpg" >
        <p style="float:left;  "></p>
    </p>
    <p style="">
        <img src="/images/test.jpg" >
    </p></p>

Copy after login

This article explains how to use regular rules to remove width and height styles in PHP. For more related content, please pay attention to the PHP Chinese website.

Related recommendations:

Detailed explanation of file content deduplication and sorting

Interpretation of mysql case-sensitive configuration issues

How to use php to merge arrays and retain key values

The above is the detailed content of About how to remove width and height styles in PHP using regular expressions. For more information, please follow other related articles on the PHP Chinese website!