php调用google地图

function curIp(){<br />
	$ip='';<br />
	if(getenv('HTTP_CLIENT_IP') and strcasecmp(getenv('HTTP_CLIENT_IP'),'unknown')){<br />
		$ip=getenv('HTTP_CLIENT_IP');<br />
	}elseif(getenv('HTTP_X_FORWARDED_FOR') and strcasecmp(getenv('HTTP_X_FORWARDED_FOR'),'unknown')){<br />
		$ip=getenv('HTTP_X_FORWARDED_FOR');<br />
	}elseif(getenv('REMOTE_ADDR') and strcasecmp(getenv('REMOTE_ADDR'),'unknown')){<br />
		$ip=getenv('REMOTE_ADDR');<br />
	}elseif(isset($_SERVER['REMOTE_ADDR']) and $_SERVER['REMOTE_ADDR'] and strcasecmp($_SERVER['REMOTE_ADDR'],'unknown')){<br />
		$ip=$_SERVER['REMOTE_ADDR'];<br />
	}else{<br />
		$ip='127.0.0.1';<br />
	}<br />
	return $ip;<br />
}