disbursements.php

<?php

require_once 'vendor/autoload.php';
require_once 'Authorisation.php';
use GuzzleHttp\Client;

/*
RSA PASSWORD ENCRYPTION WITH PADDING OPENSSL_PKCS1_PADDING 1024
BITS 64BIT ENCODED
*/

//Type of padding
$padding = OPENSSL_PKCS1_PADDING;

//4 digit Pin from Customer/Client
$sensitiveData = '1111';

// Get keys from a string. Public key for encrypting from the Documentation
$publicKeyString = <<<'PK'
-----BEGIN PUBLIC KEY-----
MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCkq3XbDI1s8Lu7SpUBP+bqOs/MC6PKWz6n/0UkqTiOZqKqaoZClI3BUDTrSIJsrN1Qx7ivBzsaAYfsB0CygSSWay4iyUcnMVEDrNVOJwtWvHxpyWJC5RfKBrweW9b8klFa/CfKRtkK730apy0Kxjg+7fF0tB4O3Ic9Gxuv4pFkbQIDAQAB
-----END PUBLIC KEY-----
PK;

// Load public key
$publicKey = openssl_pkey_get_public([$publicKeyString, '']);
if (!$publicKey) {
    echo 'Public key NOT Correct
';
}
if (!openssl_public_encrypt($sensitiveData, $encryptedWithPublic, $publicKey, $padding)) {
    echo 'Error encrypting with public key
';
}

//Encrypted Pin
$pinEncrypted = base64_encode($encryptedWithPublic);
//

/*
This API is used to request a payment from a consumer(Payer).
The consumer(payer) will be asked to authorize the payment.
After authorization, the transaction will be executed.
*/

$client = new Client();

//Enter phone number here without the country code
$phone_number = '97***12';

//Country Code
$country_code = 'ZM';

//Currency Code
$currency_code = 'ZMW';

//Amount to be sent
$amount = '1';

//Check for errors while executing the code
try {
    $response = $client->request('POST', 'https://openapiuat.airtel.africa/standard/v1/disbursements/', [
        'headers' => [
            'Content-Type'  => 'application/json',
            'Authorization' => 'Bearer '.$access_token,
            'X-Country'     => "$country_code",
            'X-Currency'    => "$currency_code",
        ],

        'json'=> [

            'payee' => [
                'msisdn' => $phone_number,
            ],
            'reference'   => 'Disbursements',
            'pin'         => "$pinEncrypted",
            'transaction' => [
                'amount' => $amount,
                'id'     => mt_rand(1000000, 9999999),
            ],

        ],
    ]);

    $push_payments = $response->getBody();
    echo $push_payments;
}

//Throw Error Here
catch (Exception $e) {
    echo 'Whoops something went wrong: '.$e->getMessage();
}