How to replace width with php regular expression

php正则替换width的实现方法：首先打开相应的代码文件；然后通过PHP正则方法如“preg_replace(array('/(]*?)width=.+?[\'|\"]/'...}”实现替换width值即可。

本文操作环境：windows7系统、PHP7.1版，DELL G3电脑

php正则怎么实现替换width？

php正则替换img标签width、height、style 重置图片宽高样式

pc网站往往指定了图片的宽高,到移动站了可能出现横向滚动条的问题,影响体验,因此有了以下方法,主要功能是去掉style和height标签,同时把图片的width宽度修改为百分比,代码如下:

$context = &#39;<p style="text-align: center;">
<img src="/static/imghwm/default1.png"  data-src="http://www.maofa.org/uploadfile/2016/0707/20160707032929237.jpg"  class="lazy"  alt=""    style="max-width:90%" /></p>
<p style="text-align: center;">
<img src="/static/imghwm/default1.png"  data-src="http://www.maofa.org/uploadfile/2016/0707/20160707032916780.jpg"  class="lazy"  alt="xxx"     style="max-width:90%"   style="max-width:90%" style="width: 95%;" /></p>
<table width="100%"></table>
<img  src="/static/imghwm/default1.png"  data-src="http://www.maofa.org/uploadfile/2017/1122/20171122797034.jpg"  class="lazy"      style="max-width:90%"  style="max-width:90%" border="0" alt="How to replace width with php regular expression" >&#39;;
echo removeImgAttr($context);
function removeImgAttr($content){
$content = preg_replace( 
array(
&#39;/(<img  [^< alt="How to replace width with php regular expression" >]*?)width=.+?[\&#39;|\"]/&#39;,
&#39;/(<img.*?)((height)=[\&#39;"]+[0-9|%]+[\&#39;"]+)/&#39;,
&#39;/(<img.*?)((style)=[\&#39;"]+(.*?)+[\&#39;"]+)/&#39;,
) , array(&#39;$1 width="90%" &#39;, &#39;$1&#39;, &#39;$1&#39;) , $content);
return $content;
}

 

推荐学习：《PHP视频教程》

The above is the detailed content of How to replace width with php regular expression. For more information, please follow other related articles on the PHP Chinese website!