Get html code of page and parse out content of <div class="img-wrapper">

Use https://www.php.net/manual/en/function.file-get-contents.php

See first example

That gets content of entire page. How do I get content of a single DIV?

Your filter what you want with preg_match

I have downloaded this file (a single file simple_html_dom.php is enough to make this work):

https://sourceforge.net/projects/simplehtmldom/files/

Simple example is here:

https://code.tutsplus.com/tutorials/html-parsing-and-screen-scraping-with-the-simple-html-dom-library--net-11856

And this code will get all DIVs with class "wrap", and then you can for example loop them and add into a variable:

        require('public/simple_html_dom.php');
        $html = new \simple_html_dom();
        $html->load_file('https://www.example.com/');
        $items = $html->find('div[class=wrap]');



        $result = '';
        $i = 0;
        foreach ($items as $item) {
            if ($i == 3) {
                break;
            } else {
                $i++;
                $result .= $item->innertext;
            }
        }

        return $result;