How to post request with query params in laravel 9 - laravel

Question

I am trying to send post request with query params. just like this screenshot
I used Http::post but it supports only json as far as I know. I just want to send request just like the screenshot. cause API data only supports parameter wise. Here What I tried but failed to achieve that.
FormController.php:
public function post_parameter_wise(Request $request,$lp_campaign_id, $lp_campaign_key, $first_name, $last_name, $email, $phone, $zip_code){
$form = new Form();
$fName = $form->first_name = $request->get($first_name);
$lName = $form->last_name = $request->get($last_name);
$cCmail = $form->email = $request->get($email);
$cPhone = $form->phone = $request->get($phone);
$zCode = $form->zip_code = $request->get($zip_code);
$response = Http::post("https://t.vivint.com/post.do", [
"lp_campaign_id" => $lp_campaign_id,
"lp_campaign_key" => $lp_campaign_key,
// "lp_supplier_id" => "",
"first_name" => $fName,
"last_name" => $lName,
"email" => $cCmail,
"phone" => $cPhone,
"zip_code" => $zCode
]);
dd($response);

Answer 1

Can't leave a comment so disregard this as the answer
Preferably, you just need to change it from a Post request to a Get request and it will work
$response = Http::get("https://t.vivint.com/post.do", [...
But a post request will contain the data as a post request should.
If you have to use post and define the query params then you should do it as follows
public function post_parameter_wise(Request $request,$lp_campaign_id, $lp_campaign_key, $first_name, $last_name, $email, $phone, $zip_code){
$form = new Form();
$fName = $form->first_name = $request->get($first_name);
$lName = $form->last_name = $request->get($last_name);
$cCmail = $form->email = $request->get($email);
$cPhone = $form->phone = $request->get($phone);
$zCode = $form->zip_code = $request->get($zip_code);
$response = Http::post("https://t.vivint.com/post.do?lp_campaign_id=".$lp_campaign_id."&lp_campaign_key=".$lp_campaign_key."&first_name=".$fName."&last_name=".$lName."&email=".$cCmail."&phone=".$cPhone."&zip_code=".$zCode, []);
dd($response);
Although this is really just forcing it to