<?

/*  class that grabs IP info based on a couple of IP's
using the IPInfo DB http://ipinfodb.com/
 */ 

class IPInfo {
	
	function getInfo($ips) {
		// expects either 1  IP or an array of ips.
		if (!$ips) {
			return false;
		}
		if (!is_array($ips)) {
			$ips = array($ips);
		}
		//IP Info db allows multiple IP request in series of up to 25. so if there are more than one, hit the 
		if (count($ips)>1) {
			$ips = array_map(array(&$this, "cleanIP"), $ips); 
			$ips = array_unique($ips);
			$ip_chunks = array_chunk($ips,25);
			$ipinfo = array();
			foreach($ip_chunks as $ipch) {
				$url = "http://ipinfodb.com/ip_query2.php?timezone=false&output=json&ip=".implode(',',$ipch);
				$val = $this->makeRequest($url);
				foreach($val['page']['Locations'] as $i) {
					$ipinfo[$i['Ip']] = $i;
				}
			}
			return $ipinfo;
		}
		else {
			$url = "http://ipinfodb.com/ip_query.php?timezone=false&output=json&ip=".$this->cleanIP($ips[0]);
			$val = $this->makeRequest($url);
			$ipinfo = array("{$ips[0]}" => $val['page']);
			return array("{$ips[0]}" => $val['page']);
		}
	}
	
	function cleanIP($ip) {
		return preg_replace('/[^0-9\.]/','',$ip);
	}
	
	private function makeRequest($url) {
		$referer = "http://".$_SERVER['HTTP_HOST'].$_SERVER['PHP_SELF'];
		
		$ch = curl_init();
		curl_setopt($ch, CURLOPT_URL, $url);
		curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
		curl_setopt($ch, CURLOPT_TIMEOUT, 3);
		curl_setopt($ch, CURLOPT_REFERER, $referer);

		$tries=0;
		$page=false;
		while( $page===false && $tries<= 5) {
			$page = curl_exec($ch);			
			$tries++;
		}
		$httpcode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
		curl_close($ch);				
		return array('page'=>json_decode($page,true), 'tries'=>$tries, 'httpcode' => $httpcode);		
	}
}

?>