/**
* Get the images from a DOM.
*
* @param pQuery $dom The DOM to search.
* @param string $url The URL of the document to add to relative URLs.
* @param int $maxImages The maximum number of images to return.
* @return array Returns an array in the form: `[['Src' => '', 'Width' => '', 'Height' => ''], ...]`.
*/
function domGetImages($dom, $url, $maxImages = 4)
{
$Images = array();
foreach ($dom->query('img') as $element) {
$Images[] = array('Src' => absoluteSource($element->attr('src'), $url), 'Width' => $element->attr('width'), 'Height' => $element->attr('height'));
}
// Gdn::Controller()->Data['AllImages'] = $Images;
// Sort by size, biggest one first
$ImageSort = array();
// Only look at first 4 images (speed!)
$i = 0;
foreach ($Images as $ImageInfo) {
$Image = $ImageInfo['Src'];
if (strpos($Image, 'doubleclick.') != false) {
continue;
}
try {
if ($ImageInfo['Height'] && $ImageInfo['Width']) {
$Height = $ImageInfo['Height'];
$Width = $ImageInfo['Width'];
} else {
list($Width, $Height) = getimagesize($Image);
}
$Diag = (int) floor(sqrt($Width * $Width + $Height * $Height));
// Gdn::Controller()->Data['Foo'][] = array($Image, $Width, $Height, $Diag);
if (!$Width || !$Height) {
continue;
}
// Require min 100x100 dimension image.
if ($Width < 100 && $Height < 100) {
continue;
}
// Don't take a banner-shaped image.
if ($Height * 4 < $Width) {
continue;
}
// Prefer images that are less than 800px wide (banners?)
// if ($Diag > 141 && $Width < 800) { }
if (!array_key_exists($Diag, $ImageSort)) {
$ImageSort[$Diag] = array($Image);
} else {
$ImageSort[$Diag][] = $Image;
}
$i++;
if ($i > $maxImages) {
break;
}
} catch (Exception $ex) {
// do nothing
}
}
krsort($ImageSort);
$GoodImages = array();
foreach ($ImageSort as $Diag => $Arr) {
$GoodImages = array_merge($GoodImages, $Arr);
}
return $GoodImages;
}
