gozap_api/Admin/Swap/refer_swap.php

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

$RiderID="";
$ReturnBatteryID="";
$SwapBatteryID="";
$SwapReferID="";
$TotalReferdSwapCount="";
$UsedReferdSwapCount="";
$AvailableReferdSwapCount="";

if (isset($_POST["RiderID"]) && !empty($_POST["RiderID"])) {
    $RiderID=$_POST["RiderID"];
}
if (isset($_POST["ReturnBatteryID"]) && !empty($_POST["ReturnBatteryID"])) {
    $ReturnBatteryID=$_POST["ReturnBatteryID"];
}
if (isset($_POST["SwapBatteryID"]) && !empty($_POST["SwapBatteryID"])) {
    $SwapBatteryID=$_POST["SwapBatteryID"];
}
if (isset($_POST["SwapReferID"]) && !empty($_POST["SwapReferID"])) {
    $SwapReferID=$_POST["SwapReferID"];
}
if (isset($_POST["TotalReferdSwapCount"]) && !empty($_POST["TotalReferdSwapCount"])) {
    $TotalReferdSwapCount=$_POST["TotalReferdSwapCount"];
}
if (isset($_POST["UsedReferdSwapCount"]) && !empty($_POST["UsedReferdSwapCount"])) {
    $UsedReferdSwapCount=$_POST["UsedReferdSwapCount"];
}
if (isset($_POST["AvailableReferdSwapCount"]) && !empty($_POST["AvailableReferdSwapCount"])) {
    $AvailableReferdSwapCount=$_POST["AvailableReferdSwapCount"];
}

$SwapInsertSql = "INSERT INTO swap(RiderID, SwapReferID, ReturnBatterID, SwappedBatterID, IsFreeSwap) VALUES ('$RiderID','$SwapReferID','$ReturnBatteryID','$SwapBatteryID','0')";

$SwapInsertresult = $conn->query($SwapInsertSql);
if ($SwapInsertresult === TRUE) { 
    $ReferPostData = array(
        'SwapReferID' => $SwapReferID,
        'TotalReferdSwapCount' => $TotalReferdSwapCount,
        'UsedReferdSwapCount' => $UsedReferdSwapCount,
        'AvailableReferdSwapCount' => $AvailableReferdSwapCount,
    );
    $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);
    $value = array(
        "RiderID"=>$RiderID,
        "ReturnBatteryID"=>$ReturnBatteryID,
        "SwapBatteryID"=>$SwapBatteryID,
        "Refer"=>$ReferJsonResponse,
        "Message"=>"Swap Data saved successfully",
      );
      // Use json_encode() function
      $json = json_encode($value);
}else {
    http_response_code(404);
    $errorMesage= $conn->error;
    // Declare an array with error message 
    $value = array(
      "Message"=>"Something went wrong",
      "Error"=>$errorMesage
    );
    // Use json_encode() function
    $json = json_encode($value);
}
// Display the output
echo ($json);
$conn->close();