Regular expression - PHP regular batch replacement of src in Img question?

1. A description content, in the form of:
<p><img src="file:///C:/Users/Administrator/Desktop/test/data/5201608091357/contentPic/ linen skirt 16/1643805e -1.jpg" /><br /><img src="file:///C:/Users/Administrator/Desktop/test/data/5201608091357/contentPic/ linen skirt 16/1643805e-2 .jpg" /><br /><img src="file:///C:/Users/Administrator/Desktop/test/data/5201608091357/contentPic/ linen skirt 16/1643805e-3.jpg " /><br />

2. Now my requirement is to batch replace the image paths in src. I can change the path to /upload/img/. How do I write the regular change?

Reply content:

1. A description content, in the form of:
<p><img src="file:///C:/Users/Administrator/Desktop/test/data/5201608091357/contentPic/ linen skirt 16/1643805e -1.jpg" /><br /><img src="file:///C:/Users/Administrator/Desktop/test/data/5201608091357/contentPic/ linen skirt 16/1643805e-2 .jpg" /><br /><img src="file:///C:/Users/Administrator/Desktop/test/data/5201608091357/contentPic/ linen skirt 16/1643805e-3.jpg " /><br />

2. Now my requirement is to batch replace the image paths in src. I can change the path to /upload/img/. How do I write the regular change?

str_replace('file:///C:/Users/Administrator/Desktop/test/data/5201608091357/contentPic/ linen skirt 16/','/upload/img/',$str)

1. Because your prefix is ​​fixed, it is actually more efficient to use str_replace.
2. If it is not fixed, you can refer to the following method preg_replace_callback
3. When debugging, remember to view the source code.

<code><?php
    $str = '<p><img src="file:///C:/Users/Administrator/Desktop/测试/data/5201608091357/contentPic/麻短裙16/1643805e-1.jpg" /><br /><img src="file:///C:/Users/Administrator/Desktop/测试/data/5201608091357/contentPic/麻短裙16/1643805e-2.jpg" /><br /><img src="file:///C:/Users/Administrator/Desktop/测试/data/5201608091357/contentPic/麻短裙16/1643805e-3.jpg" /><br />';

    echo $str;

    $pregRule = "/file:\/\/\/C:\/Users\/Administrator\/Desktop\/测试\/data\/5201608091357\/contentPic\//";

    $result = preg_replace_callback($pregRule, function(){
        return "/upload/img/";
    }, $str);
    echo $result;</code>