extract image src from text?

Question

I have a variable $content that contains some text and images in this form (unknown amount of images):

    text text text text 

        

Answer 1

    $dom = new domDocument;
    $dom->loadHTML($html);
    $dom->preserveWhiteSpace = false;
    $imgs  = $dom->getElementsByTagName("img");
    $links = array();
    for($i = 0; $i < $imgs->length; $i++) {
       $links[] = $imgs->item($i)->getAttribute("src");
    }