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<?php
class DOMExtract extends DOMDocument
{
private $source;
private $document;
public function __construct()
{
libxml_use_internal_errors(true);
$this->preserveWhiteSpace = false;
$this->strictErrorChecking = false;
$this->formatOutput = true;
}
public function setSource($source)
{
$this->source = file_get_contents($source);
return $this;
}
public function getInnerHTML($tag, $id=null, $nodeValue = false)
{
if (empty($this->source)) {
throw new Exception('Error: Missing $this->source, use setSource() first');
}
$html = null;
$this->loadHTML($this->source);
$element = $this->getElementsByTagName($tag);
foreach ($element as $tags) {
if ($id !== null) {
$attr = explode('=', $id);
if ($tags->getAttribute($attr[0]) == $attr[1]) {
if ($nodeValue == true) {
$html .= trim($tags->nodeValue);
} else {
$html .= $this->innerHTML($tags);
}
}
} else {
if ($nodeValue == true) {
$html .= trim($tags->nodeValue);
} else {
$html .= $this->innerHTML($tags);
}
}
}
return $html;
}
protected function innerHTML($document)
{
$html = "";
foreach ($document->childNodes as $v) {
$tmp = new DOMDocument();
$tmp->appendChild($tmp->importNode($v, true));
$html .= trim($tmp->saveHTML());
}
return $html;
}
}
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