Integrate cforms II and Salesforce

my_cforms_action_salesfoce

function my_cforms_action($cformsdata) {
	$formID = $cformsdata['id'];
	$form = $cformsdata['data'];
	$curl_connection = curl_init('https://www.salesforce.com/servlet/servlet.WebToLead?encoding=UTF-8');
	curl_setopt($curl_connection, CURLOPT_CONNECTTIMEOUT, 30);
	curl_setopt($curl_connection, CURLOPT_USERAGENT,
	"Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)");
	curl_setopt($curl_connection, CURLOPT_RETURNTRANSFER, true);
	curl_setopt($curl_connection, CURLOPT_SSL_VERIFYPEER, false);
	curl_setopt($curl_connection, CURLOPT_FOLLOWLOCATION, 1);
	foreach ( $form as $key => $value) {
		if ($key[1] == '$'){
			unset($form[$key]);
		} else {
			if ($key=='Campaign_ID') {
				$post_items[] = $key . '=' . $value;
			} else {
				$post_items[] = str_replace(' ','_', strtolower($key)) . '=' . $value;
			}
		}
	}
	$post_string = implode ('&', $post_items);
	curl_setopt($curl_connection, CURLOPT_POSTFIELDS, $post_string);
	$result = curl_exec($curl_connection);
	curl_close($curl_connection);
	$opts = array('http' =>
		array(
			'method' => 'POST',
			'header' => 'Content-type: text/html; charset=UTF-8',
			'content' => $form
		)
	);
	$context = stream_context_create($opts);
	$fp = fopen('https://www.salesforce.com/servlet/servlet.WebToLead?encoding=UTF-8', 'r+', false, $context);
	fpassthru($fp);
	fclose($fp);
}