在Wordpress中显示图像后添加图像URL

Question

I am trying to display the URL of an Image after every image in the main content on Wordpress. To do this I am building a plugin.

If add the following code within my plugin I can display 2 of the same Image. as the code to display the image is stored in $1 below.

$content = preg_replace("/(<img([^>]*)>)/i",
    "<div class=\"image_wrap\">$1<div class=\"linkbox\">" .
    "$1</div></div>", $content );

In theory all I need to do is hack at the second instance of $1 in the above code to strip the image src. So below is the code I have tried and it using some substr and strpos functions but that doesn't seem to want to work for me.

$content = preg_replace("/(<img([^>]*)>)/i",
    "<div class=\"image_wrap\">$1<div class=\"linkbox\">" . 
     substr(substr("$1", strpos("$1","src=\"")+5), 0,strpos(substr("$1",strpos("$1","src=\"")+5),"\"")) .
</div></div>", $content );

Is there anything glaringly wrong with this?

Thanks

Answer 1

Here is the solution that I eventually figured out thanks to Mario in the above comments

$content = preg_replace_callback(
        '/(<img([^>]*)>)/i',
        create_function(
            '$matches',
            'return CREDIT_HEAD . 
             "<div class=\"image_wrap\">$matches[0]<div class=\"linkbox\">" . 
                        substr(substr("$matches[0]", strpos("$matches[0]","src=\"")+5), 0,strpos(substr("$matches[0]", strpos("$matches[0]","src=\"")+5),"\"")) .
                    "</div></div>" . 
                    CREDIT_FOOT;'
        ),
        $content);