$str = '{"LAT":"34.290708458919785","LNG":"117.2353128051758"}';
$json=json_decode($str);// stdClass Object ( [LAT] => 34.290708458919785 [LNG] => 117.2353128051758 )
// print_r($json);
$lat_lng=get_object_vars($json);
print_r($lat_lng);
$str = '{"LAT":"34.290708458919785","LNG":"117.2353128051758"}';
$json=json_decode($str);// stdClass Object ( [LAT] => 34.290708458919785 [LNG] => 117.2353128051758 )
// print_r($json);
$lat_lng=get_object_vars($json);
print_r($lat_lng);