Home >Backend Development >PHP Problem >How to remove IMG tag in PHP?

How to remove IMG tag in PHP?

Guanhui
GuanhuiOriginal
2020-06-15 16:10:433701browse

How to remove IMG tag in PHP?

PHP如何去除IMG标签?

在PHP中可以使用“preg_replace()”函数去除IMG标签,该函数作用是执行一个正则表达式的搜索和替换,使用时只需向第1个参数传入IMG标签正则,第2个为空,第3个为要操作的字符串即可。

IMG标签正则:/911a089107768724fb33c87b2462853f]*?src\s*=\s*(\'|\")(.*?)\\1[^>]*?\/?\s*>/i

使用示例

<?php
/*PHP正则提取图片img标记中的任意属性*/
$str = &#39;<center><img src="/uploads/images/20100516000.jpg" height="120" width="120"><br />PHP正则提取或更改图片img标记中的任意属性</center>&#39;;
//1、取整个图片代码
preg_match(&#39;/<\s*img\s+[^>]*?src\s*=\s*(\&#39;|\")(.*?)\\1[^>]*?\/?\s*>/i&#39;,$str,$match);
echo $match[0];
//2、取width
preg_match(&#39;/<img.+(width=\"?\d*\"?).+>/i&#39;,$str,$match);
echo $match[1];
//3、取height
preg_match(&#39;/<img.+(height=\"?\d*\"?).+>/i&#39;,$str,$match);
echo $match[1];
//4、取src
preg_match(&#39;/<img.+src=\"?(.+\.(jpg|gif|bmp|bnp|png))\"?.+>/i&#39;,$str,$match);
echo $match[1];
/*PHP正则替换图片img标记中的任意属性*/
//1、将src="/uploads/images/20100516000.jpg"替换为src="/uploads/uc/images/20100516000.jpg")
print preg_replace(&#39;/(<img.+src=\"?.+)(images\/)(.+\.(jpg|gif|bmp|bnp|png)\"?.+>)/i&#39;,"\${1}uc/images/\${3}",$str);
echo "<hr/>";
//2、将src="/uploads/images/20100516000.jpg"替换为src="/uploads/uc/images/20100516000.jpg",并省去宽和高
print preg_replace(&#39;/(<img).+(src=\"?.+)images\/(.+\.(jpg|gif|bmp|bnp|png)\"?).+>/i&#39;,"\${1} \${2}uc/images/\${3}>",$str);
?>


推荐教程:《PHP教程

The above is the detailed content of How to remove IMG tag in PHP?. For more information, please follow other related articles on the PHP Chinese website!

Statement:
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Previous article:what is php?Next article:what is php?