How to send a POST request using this arduino code.

Hello all,

I've been following a tutorial recently on instructables for sending some temperature and humidity sensor data to a website. After a few minor tweaks to the code I have the Arduino successfully sending data to my website and displaying it in a table. Also storing in an SQL database.

So, obviously the POST command in the code works but I'm having trouble sending a POST request from a request maker, Make Simple HTTP POST And GET Requests Online . I want to send POST requests through this request maker and have them work successfully on the website because I'm looking to expand the amount of sensor data the arduino is sending to the website but first I'd like to simulate this data using simple requests.

The POST code on the arduino is this:

void loop(){


currentMillis = millis();
if(currentMillis - previousMillis > interval) { // READ ONLY ONCE PER INTERVAL
previousMillis = currentMillis;
h = (int) dht.readHumidity();
t = (int) dht.readTemperature();
}

data = "temp1=";

data.concat(t);

data.concat("&hum1=");

data.concat(h);


if (client.connect("www.yoursite.com",80)) { // REPLACE WITH YOUR SERVER ADDRESS
client.println("POST /add.php HTTP/1.1");
client.println("Host: yoursite.com"); // SERVER ADDRESS HERE TOO
client.println("Content-Type: application/x-www-form-urlencoded");
client.print("Content-Length: ");
client.println(data.length());
client.println();
client.print(data);
}

My php file that deals with POST requests is:

   	include("connect.php");
   	
   	$link=Connection();

	$temp1=$_POST["temp1"];
	$hum1=$_POST["hum1"];

	$query = "INSERT INTO `tempLog` (`temperature`, `humidity`) 
		VALUES ('".$temp1."','".$hum1."')"; 
   	
   	mysqli_query($link, $query);
	((is_null($___mysqli_res = mysqli_close($link))) ? false : $___mysqli_res);

   	header("Location: index.php");

This may be a silly question, but I'm still a beginner at this stuff, but can someone please explain how using this information I can send my own POST request using a request maker to my website?