DomDocument childNodes attributes nodeValue getAttribute

$imgEle = $table
    ->childNodes->item(1)
    ->childNodes->item(0)
    ->childNodes->item(1);

$ele = $table
    ->childNodes->item(1)
    ->childNodes->item(2)//td
    ->getElementsByTagName('strong')
;
$minTemp = $ele->item(0)->nodeValue;
$maxTemp = $ele->item(1)->nodeValue;
$imgSrc = $imgEle->getAttribute('src');