/**
* fetches all embeded images
*
* @param string $url
* @return array
*/
public static function fetch($url, $limit = 5, $flat = true)
{
//get the html as string
$html = UrlUtils::getUrlContent(urldecode($url), 'GET');
$images = self::detect($html);
$result = array();
foreach ($images as $image) {
$image = UrlUtils::abslink($image, $url);
$size = @getimagesize($image);
$size = $size[0] + $size[1];
// ignore all (stats)images smaller than 5x5
if ($size >= 10) {
$result[] = array('size' => $size, 'image' => $image);
}
}
usort($result, array("ImageParser", "sort"));
//$result = array_unique($result);
$result = array_slice($result, 0, $limit - 1);
// return only the images and crop the size
if ($flat) {
$flat = array();
foreach ($result as $image) {
$flat[] = $image['image'];
}
$result = $flat;
}
return $result;
}
/**
* Parse a given html for meta and title-tags
*
* @param string $pUrl
* @return array $lValues
*/
public static function parse($pHtml, $pUrl)
{
if (!preg_match("~<meta.*http-equiv\\s*=\\s*(\"|\\')\\s*Content-Type\\s*(\"|\\').*\\/?>~", $pHtml)) {
$pHtml = preg_replace('/<head[^>]*>/i', '<head>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=utf-8">
', $pHtml);
}
try {
$lValues = array();
//supress html-validation-warnings
libxml_use_internal_errors(true);
$lDoc = new DOMDocument();
$lDoc->loadHTML($pHtml);
//get all meta-elements
$lTags = $lDoc->getElementsByTagName('meta');
//loop the metas
foreach ($lTags as $lTag) {
//if attribute name isset make a new entry in an array with key=name and value=content
if ($lTag->hasAttribute('name')) {
$lName = strtolower($lTag->getAttribute('name'));
$lValues['meta'][$lName] = $lTag->getAttribute('content');
}
}
//get all title elements
$lTitles = $lDoc->getElementsByTagName('title');
//loop the titles
foreach ($lTitles as $lMetaTitle) {
$lTitle = $lMetaTitle->nodeValue;
//and save the value to an array with key=title. if a title is found, break the loop and continue
if ($lTitle) {
$lValues['title'] = $lTitle;
continue;
}
}
//get all meta-elements
$lLinks = $lDoc->getElementsByTagName('link');
//loop the metas
foreach ($lLinks as $lLink) {
//if attribute name isset make a new entry in an array with key=name and value=content
if ($lLink->hasAttribute('rel')) {
$lName = $lLink->getAttribute('rel');
$lValues['links'][$lName] = UrlUtils::abslink($lLink->getAttribute('href'), $pUrl);
}
}
return $lValues;
} catch (Exception $e) {
continue;
}
}
