Xpath.php

<?php

class XPATH{

	public $dom, $xpath;

	//constructor
	public function __construct($url){
		$html = $this->_curl($url);
		$this->dom = new DOMDocument();
		@$this->dom->loadHTML($html);
		$this->xpath = new DOMXpath($this->dom);
	}

	public function query($q){
		$result = $this->xpath->query($q);
		return $result;
	}

	public function preview($results){
		echo "<prev>";
		print_r($results);
		echo "<br> Node Values <br/>";
		foreach ($results as $result) {
			echo trim($result->nodeValue) . '<br>';
			$array[] = $result;
	}
	echo "<br><br>";
	print_r($array);  
}

	private function _curl($url){
		$ch = curl_init();
		curl_setopt($ch, CURLOPT_URL, $url);
		curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
		curl_setopt($ch, CURLOPT_USERAGENT, "Mozilla/5.0 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)");
		curl_setopt($ch, CURLOPT_AUTOREFERER, true);
		curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);

		$result = curl_exec($ch);
	if(!$result){
		echo "<br /> cURL error number:" .curl_errno($ch);
		echo "<br /> cURL error:" .curl_error($ch) . "on URL ." . $url;
		var_dump(curl_getinfo($ch));
		var_dump(curl_error($ch));
		exit;
	}

	return $result;
	}

}