callbackurl.php

<?php
header("Content-Type: application/json");

$stkCallbackResponse = file_get_contents('php://input');
$logFile = "stkTinypesaResponse.json";
$log = fopen($logFile, "a");
fwrite($log, $stkCallbackResponse);
fclose($log);

$callbackContent = json_decode($stkCallbackResponse);

$ResultCode = $callbackContent->Body->stkCallback->ResultCode;
$CheckoutRequestID = $callbackContent->Body->stkCallback->CheckoutRequestID;
$Amount = $callbackContent->Body->stkCallback->CallbackMetadata->Item[0]->Value;
$MpesaReceiptNumber = $callbackContent->Body->stkCallback->CallbackMetadata->Item[1]->Value;
$PhoneNumber = $callbackContent->Body->stkCallback->CallbackMetadata->Item[4]->Value;

if ($ResultCode == 0) {
    $servername = "host";
    $username = "host username";
    $password = "host passwoRd";
    $dbname = "database name";

    // Create connection
    $conn = new mysqli($servername, $username, $password, $dbname);
    // Check connection
    if ($conn->connect_error) {
        die("Connection failed: " . $conn->connect_error);
    }

    $insert = $conn->query("INSERT INTO tinypesa(CheckoutRequestID,ResultCode,amount,MpesaReceiptNumber,PhoneNumber) VALUES ('$CheckoutRequestID','$ResultCode','$Amount','$MpesaReceiptNumber','$PhoneNumber')");

    $conn = null;
}