php - Simple html dom parser - nothing happens


I'd like to parse a HTML site via HTML dom parser. My simple code is:

    require_once 'simple_html_dom.php';
    $html = new simple_html_dom();
    echo $html->find('img',0)->getAttribute('src');    

I've got thesimple_html_dom.php file on my server but when I access the PHP file nothing happens. Blank screen! I tried many different codes, I think the problem is not the code. Do I have to install dom-parser on my server or do I have to have a certain version?

People are also looking for solutions to the problem: Requesting file via PHP fails, but succeeds in Python


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