gozap_api/Admin/Refer/add_refer.php

<?php
include_once "../../include/DB.php";

$RiderID="";
$SwapReferCount="";

if (isset($_POST["RiderID"]) && !empty($_POST["RiderID"])) {
    $RiderID=$_POST["RiderID"];
}
if (isset($_POST["SwapReferCount"]) && !empty($_POST["SwapReferCount"])) {
    $SwapReferCount=$_POST["SwapReferCount"];
}
/////////////////////////////////////////////////////////////////////////////////////////////////////
$RiderPostData = array(
    'RiderID' => $RiderID
);
$CheckRidertURL = "http://localhost/cygnusa/batterySwap/api/User/";
$CheckRidertCURL = curl_init($CheckRidertURL);
curl_setopt($CheckRidertCURL, CURLOPT_HEADER, false);
curl_setopt($CheckRidertCURL, CURLOPT_RETURNTRANSFER, true);
curl_setopt($CheckRidertCURL, CURLOPT_POST, true);
curl_setopt($CheckRidertCURL, CURLOPT_POSTFIELDS, $RiderPostData);
$CheckRidertJsonResponse = curl_exec($CheckRidertCURL);
$RiderResult = json_decode($CheckRidertJsonResponse, true);

$TotalReferdSwapCount=$RiderResult["SwapData"]["ReferData"]["Total"];
$UsedReferdSwapCount=$RiderResult["SwapData"]["ReferData"]["Used"];
$AvailableReferdSwapCount=$RiderResult["SwapData"]["ReferData"]["Available"];
$SwapReferID=$RiderResult["SwapData"]["ReferData"]["SwapReferID"];

//////////////////////////////////////////////////////////////////////////////////////////////////
$ReferPostData = array(
    'SwapReferID' => $SwapReferID,
    'TotalReferdSwapCount' => ($TotalReferdSwapCount+$SwapReferCount),
    'UsedReferdSwapCount' => $UsedReferdSwapCount,
    'AvailableReferdSwapCount' => ($AvailableReferdSwapCount+$SwapReferCount),
);
$ReferURL = "http://localhost/cygnusa/batterySwap/api/Admin/Refer/";
$ReferCURL = curl_init($ReferURL);
curl_setopt($ReferCURL, CURLOPT_HEADER, false);
curl_setopt($ReferCURL, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ReferCURL, CURLOPT_POST, true);
curl_setopt($ReferCURL, CURLOPT_POSTFIELDS, $ReferPostData);
$ReferJsonResponse = curl_exec($ReferCURL);
$ReferResult = json_decode($ReferJsonResponse, true);

$value = array(
"RiderID"=>$RiderID,
"Refer"=>$ReferResult,
"Message"=>"Swap Data saved successfully",
);
// Use json_encode() function
$json = json_encode($value);

// Display the output
echo ($json);
$conn->close();