How to replace src in php

How to replace src in php: First create a PHP sample file; then use the "preg_replace_call" function to replace src in the image img, with statements such as "str_replace($ma[1],lsk::picurl($ ma[1]),$ma[0]);".

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The operating environment of this tutorial: Windows 7 system, PHP version 5.6, Dell G3 computer.

php replaces the image src address in the text string in turn

For example, there is a piece of code like this:

<p><img _src="/tt.jpg" src="http://www.sjmoban.com/tt.jpg" title="1539765170791397.jpg"/></p>

I want to add the image img If the src is replaced by the address processed by a specific function, you can use the preg_replace_call function to operate. The code is as follows:

$pattern="/<[img|IMG].*?src=[\&#39;|\"](.*?(?:[\.gif|\.jpg|\.png|\.jpeg]))[\&#39;|\"].*?[\/]?>/i";
preg_replace_callback($pattern,function($ma) {
    return str_replace($ma[1],lsk::picurl($ma[1]),$ma[0]);
},$content);

Midterm:lsk::picurl()//This function processes the src address.

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