/**
* Create DomQuery by given string
*
* @param $string
* @param null|string $baseUrl
* @param null|string $charset
* @return DOMQuery
*/
public static function createFromString($string, $baseUrl = null, $charset = null)
{
$tag = null;
if (preg_match('/<(!DOCTYPE|html[ >]|head[ >]|body[ >])/siU', trim($string), $match)) {
$tag = strtolower(trim($match[1]));
$tag = str_replace(array('>', ' '), '', $tag);
if (preg_match('/\\<meta[^\\>]+charset *= *["\']?([a-zA-Z\\-0-9]+)/i', $string, $matches)) {
$charset = $matches[1];
}
if (preg_match('/\\<base[^\\>]+href *= *["\']?([^"\'>]+)["\']?/i', $string, $matches)) {
$baseUrl = $matches[1];
}
} else {
$string = '<!DOCTYPE html>
<html>
<head><meta http-equiv="content-type" content="text/html; charset=' . $charset . '"></head>
<body>' . $string . '</body>
</html>';
}
if (null === $charset) {
$charset = 'UTF-8';
}
if (null !== $charset && function_exists('mb_convert_encoding') && in_array(strtolower($charset), array_map('strtolower', mb_list_encodings()))) {
$string = mb_convert_encoding($string, 'HTML-ENTITIES', $charset);
}
$string = str_replace(' ', '[nbsp]', $string);
$current = libxml_use_internal_errors(true);
$disableEntities = libxml_disable_entity_loader(true);
$dom = new \DOMDocument('1.0', $charset);
$dom->validateOnParse = true;
@$dom->loadHTML($string);
libxml_use_internal_errors($current);
libxml_disable_entity_loader($disableEntities);
$nodes = array();
if (null === $tag) {
foreach ($dom->getElementsByTagName('body')->item(0)->childNodes as $node) {
$nodes[] = $node;
}
} elseif ($tag === '!doctype') {
$nodes[] = $dom;
} else {
$node = $dom->getElementsByTagName($tag)->item(0);
if ($node) {
$nodes[] = $node;
}
}
$domQuery = new self($nodes);
if (count($domQuery->nodes)) {
$domQuery->loadDOMDocument(reset($domQuery->nodes))->formatOutput = true;
}
if (null !== $baseUrl) {
foreach ($domQuery->find('frame, iframe, img, input, script') as $el) {
if ($el->getAttribute('src')) {
$el->setAttribute('src', Url::combine($baseUrl, $el->getAttribute('src')));
}
}
foreach ($domQuery->find('a, area, link') as $el) {
$el->setAttribute('href', Url::combine($baseUrl, $el->getAttribute('href')));
}
foreach ($domQuery->find('form') as $el) {
$el->setAttribute('action', Url::combine($baseUrl, $el->getAttribute('action')));
}
}
return $domQuery;
}
