Lipa Na Mpesa Online php script

stkpush.php

<?php
//Authenticate your app-----Access Token
$consumerKey='';
$consumerSecret='';
$headers=['Content-Type:application/json; charset=utf8'];
$url = 'https://sandbox.safaricom.co.ke/oauth/v1/generate?grant_type=client_credentials';
$curl = curl_init($url);
curl_setopt($curl,CURLOPT_HTTPHEADER,$headers);
curl_setopt($curl,CURLOPT_RETURNTRANSFER,true);
curl_setopt($curl,CURLOPT_HEADER,false);
curl_setopt($curl,CURLOPT_USERPWD,$consumerKey.':'.$consumerSecret);
$result = curl_exec($curl);
$status = curl_getinfo($curl,CURLINFO_HTTP_CODE);
$result = json_decode($result);
$access_token = $result->access_token;
echo 'The access token is: '.$access_token;
//curl_close($curl);



//Lipa na M-Pesa Online Payment API is used to initiate
//a M-Pesa transaction on behalf of a customer using STK Push.
//This is the same technique mySafaricom App uses whenever the
//app is used to make payments.

$url = 'https://sandbox.safaricom.co.ke/mpesa/stkpush/v1/processrequest';//sktpush url
$BusinessShortCode='';//shortcode
$Passkey='';//passkey
$Timestamp=date("YmdGis");//timestamp
$Password=base64_encode($BusinessShortCode.$Passkey.$Timestamp);//password encoded Base64
//log password and timestamp
$logFile = "logs/password.txt";
$log = fopen($logFile, "a");
fwrite($log, "Password=".$Password);
fwrite($log, " Timestamp=".$Timestamp);
fclose($log);
$curl = curl_init();
curl_setopt($curl, CURLOPT_URL, $url);
curl_setopt($curl, CURLOPT_HTTPHEADER, array('Content-Type:application/json', 'Authorization:Bearer '.$access_token)); //setting custom header
$curl_post_data = array(
    //Fill in the request parameters with valid values
    'BusinessShortCode' => $BusinessShortCode,//The organization shortcode used to receive the transaction.
    'Password' => $Password,//This is generated by base64 encoding BusinessShortcode, Passkey and Timestamp.
    'Timestamp' => $Timestamp,//The timestamp of the transaction in the format yyyymmddhhiiss.
    'TransactionType' => 'CustomerPayBillOnline',//The transaction type to be used for this request.
    'Amount' => '1000',//The amount to be transacted.
    'PartyA' => '254708374149',//The MSISDN sending the funds.
    'PartyB' => '174379',//The organization shortcode receiving the funds
    'PhoneNumber' => '254708374149',//The MSISDN sending the funds.
    'CallBackURL' => 'http://yourCallbackURL',//The url to where logs from M-Pesa will be sent to.
    'AccountReference' => 'STK001',//Used with M-Pesa PayBills.
    'TransactionDesc' => 'stk testing'//A description of the transaction.
);
$data_string = json_encode($curl_post_data);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
curl_setopt($curl, CURLOPT_POST, true);
curl_setopt($curl, CURLOPT_POSTFIELDS, $data_string);
$curl_response = curl_exec($curl);
print_r($curl_response);
/******* log the response**********/
$logFile = "logs/stkpush.txt";
// write the M-PESA Response to file
$log = fopen($logFile, "a");
fwrite($log, $curl_response);
fclose($log);
//display result
echo $curl_response;