利用百度API获取当前用户的省市地区，适合定位精度要求不高的项目

代码如下：

function getDistrict(){
	$ch  = curl_init();
	curl_setopt($ch , CURLOPT_URL , 'http://api.map.baidu.com/location/ip?ak=qxVuv98bZnwXqMU3fmmxXSoF&ip=&coor=bd09ll');
	curl_setopt($ch , CURLOPT_RETURNTRANSFER , 1);
	curl_setopt($ch , CURLOPT_HEADER , 0);
	$output = curl_exec($ch);
	$output = json_decode($output, true);
	if($output['status'] > 0){
		//获取失败
		return false;
	}
	$res = array();
	$res['province'] = $output['content']['address_detail']['province'];
	$res['city'] = $output['content']['address_detail']['city'];
	$res['district'] = $output['content']['address_detail']['district'];
	return $res;
}

print_r(getDistrict());

运行结果如下：

Array
(
    [province] => 安徽省
    [city] => 合肥市
    [district] => 
)