Get links on a page with DomDocument

/*
Function to get all links on a certain url using the DomDocument
Source: http://www.binarytides.com/php-get-links-on-a-page-with-domdocument/
*/

function get_links($link)
{
    //return array
    $ret = array();

    /*** a new dom object ***/
    $dom = new domDocument;

    /*** get the HTML (suppress errors) ***/
    @$dom->loadHTML(file_get_contents($link));

    /*** remove silly white space ***/
    $dom->preserveWhiteSpace = false;

    /*** get the links from the HTML ***/
    $links = $dom->getElementsByTagName('a');

    /*** loop over the links ***/
    foreach ($links as $tag)
    {
        $ret[$tag->getAttribute('href')] = $tag->childNodes->item(0)->nodeValue;
    }

    return $ret;
}


//Link to open and search for links
$link = "http://junookyo.blogspot.com/";

/*** get the links ***/
$urls = get_links($link);

/*** check for results ***/
if(sizeof($urls) > 0)
{
    foreach($urls as $key=>$value)
    {
        echo $key . ' - '. $value . '<br >';
    }
}
else
{
    echo "No links found at $link";
}