将帖子内容存储到变量

http request code

POST /parse.php HTTP/1.1
Host: mysite.com
Connection: Keep-Alive
Content-Length: 26
Content-Type: application/x-www-urlencoded

lt=12.123123&ln=123.123123

php code

//connect to database codes here
$database = "update name_tbl set lat='".$_GET['lt']."', lng='".$_GET['ln']."' where id=1";
mysqli_query($conn, $database)

So my problem I think is in the php part when I enter mysite.com/parse.php?lt=12.123123&ln=123.123123 to test if it's working and it does but when I the http request code on HttpRequest it but the send value is both 0.000000.

If you aren't sure whether the request has come to you via a GET or a POST method, you could try something like this

$lt = isset($_GET['lt']) ? $_GET['lt'] : (isset($_POST['lt']) ? $_POST['lt'] : null);
$ln = isset($_GET['ln']) ? $_GET['ln'] : (isset($_POST['ln']) ? $_POST['ln'] : null);

There might be another option called $_REQUEST which encompasses both $_GET and $_POST but has it own quirks too. Please have a read on the following link to get a better idea:

Among $_REQUEST, $_GET and $_POST which one is the fastest?