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How to replace img in php

藏色散人
藏色散人Original
2020-11-04 09:07:322283browse

php替换img的方法:首先通过PHP正则表达式提取图片img标记中的任意属性;然后将img src替换为新的地址即可。

How to replace img in php

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php正则表达式替换图片地址

代码如下:

<?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);
?>

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