PHP代码获取客户端IP地址经纬度及所在城市

<?php   $getIp=$_SERVER["REMOTE_ADDR"];  echo 'IP:',$getIp;  echo '<br/>';  $content = file_get_contents("http://api.map.baidu.com/location/ip?ak=7IZ6fgGEGohCrRKUE9Rj4TSQ&ip={$getIp}&coor=bd09ll");  $json = json_decode($content);  echo 'log:',$json->{'content'}->{'point'}->{'x'};//按层级关系提取经度数据  echo '<br/>';  echo 'lat:',$json->{'content'}->{'point'}->{'y'};//按层级关系提取纬度数据  echo '<br/>';  print $json->{'content'}->{'address'};//按层级关系提取address数据?>