Blocking php curl from scraping website content

Here is the function for Blocking php curl from scraping website content

function disguise_curl($url)
{
	$curl = curl_init(); 

	// setup headers - used the same headers from Firefox version 2.0.0.6
	// below was split up because php.net said the line was too long. :/
	$header[0] = "Accept: text/xml,application/xml,application/xhtml+xml,";
	$header[0] .= "text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5";
	$header[] = "Cache-Control: max-age=0";
	$header[] = "Connection: keep-alive";
	$header[] = "Keep-Alive: 300";
	$header[] = "Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7";
	$header[] = "Accept-Language: en-us,en;q=0.5";
	$header[] = "Pragma: "; //browsers keep this blank. 

	curl_setopt($curl, CURLOPT_URL, $url);
	curl_setopt($curl, CURLOPT_USERAGENT, 'Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2.3)

	curl_setopt($curl, CURLOPT_HTTPHEADER, $header);
	curl_setopt($curl, CURLOPT_REFERER, 'http://www.google.com');
	curl_setopt($curl, CURLOPT_ENCODING, 'gzip,deflate');
	curl_setopt($curl, CURLOPT_AUTOREFERER, true);
	curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
	curl_setopt($curl, CURLOPT_TIMEOUT, 10); 

	$html = curl_exec($curl); //execute the curl command
	if (!$html)
	{
		echo "cURL error number:" .curl_errno($ch);
		echo "cURL error:" . curl_error($ch);
		exit;
	}

	curl_close($curl); //close the connection 

	return $html; //and finally, return $html
}