php - Get DIV content from external Website

Question

I want to get a DIV from an external website with pure PHP.

External website: http://www.isitdownrightnow.com/youtube.com.html

Div text I want from isitdownrightnow (statusup div): <div class="statusup">The website is probably down just for you...</div>

I already tried file_get_contents with DOMDocument and str_get_html, but I could not get it to work.

For example this

$page = file_get_contents('http://css-tricks.com/forums/topic/jquery-selector-div-variable/');
    $doc = new DOMDocument();
    $doc->loadHTML($page);
    $divs = $doc->getElementsByTagName('div');
    foreach($divs as $div) {
        // Loop through the DIVs looking for one withan id of "content"
        // Then echo out its contents (pardon the pun)
        if ($div->getAttribute('class') === 'bbp-template-notice') {
             echo $div->nodeValue;
        }
    }

It will just display an error in the console:

Failed to load resource: the server responded with a status of 500 (Internal Server Error)

Answer 1

This is what I always use:

$url = 'https://somedomain.com/somesite/';
$content = file_get_contents($url);
$first_step = explode( '<div id="thediv">' , $content );
$second_step = explode("</div>" , $first_step[1] );

echo $second_step[0];