Getting the src of an image in a curled html with dom - php

Question

function getPage($url) {
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
$result = curl_exec($ch);
curl_close($ch);
return $result;
}
$page = getPage(trim('http://localhost/test/test.html'));
$dom = new DOMDocument();
$dom->loadHTML($page);
$xp = new DOMXPath($dom);
$result = $xp->query("//img[#class='wallpaper']");
I'm trying to find all images with a class wallpaper and now I'm stuck to that point. I tried to var_dump($result) but it's giving me a weird object(DOMNodeList)[3]. How do i finally get the src of the image?

Answer 1

$result is a DOMNodeList object.
You can find out how many items it contains with
$count = $result->length;
You access items individually using DOMNodeList::item()
if ($result->length > 0) {
$first = $result->item(0);
$src = $first->getAttribute('src');
}
You can also iterate it like an array, eg
foreach ($result as $img) {
$src = $img->getAttribute('src');
}

Answer 2

In addition to #Phil's answer, you can also grab the src attribute directly in your xpath query instead of grabbing the img element:
$srcs = array();
$result = $xp->query("//img[#class='wallpaper']/#src");
foreach($result as $attr) {
$srcs[] = $attr->value;
}

Answer 3

You can access the images in the DOMNodeList with a foreach loop.
foreach($result as $img) {
echo $img->getAttribute('src');
}
You could get the first with echo $result->item(0)->getAttribute('src'). You may want to confirm the DOMNodeList has items by checking the length property of $result.

Answer 4

Try
echo $result->getAttribute('src');