<?php

function NVPToArray($NVPString)
{
$proArray = array();
while(strlen($NVPString))
{
    // name
    $keypos= strpos($NVPString,'=');
    $keyval = substr($NVPString,0,$keypos);
    // value
    $valuepos = strpos($NVPString,'&') ? strpos($NVPString,'&'): strlen($NVPString);
    $valval = substr($NVPString,$keypos+1,$valuepos-$keypos-1);
    // decoding the respose
    $proArray[$keyval] = urldecode($valval);
    $NVPString = substr($NVPString,$valuepos+1,strlen($NVPString));
}
return json_encode($proArray);
}
// Include config file
$sandbox = FALSE;
// Set PayPal API version and credentials.
$api_version = '56.0';
$api_endpoint = 'https://api-3t.paypal.com/nvp';
$api_username = 'xxxxxxxxxxxxxxxx';
$api_password = 'xxxxxxxxxxxxxxxx';
$api_signature = 'xxxxxxxxxxxxxxx';

 // Store request params in an array
 $request_params = array
                (
                'METHOD' => 'DoDirectPayment',
                'USER' => $api_username,
                'PWD' => $api_password,
                'SIGNATURE' => $api_signature,
                'VERSION' => $api_version,
                'PAYMENTACTION' => 'Sale',
                'IPADDRESS' => $_SERVER['REMOTE_ADDR'],
                'CREDITCARDTYPE' => 'Visa',
                'ACCT' => '4444183269154444',
                'EXPDATE' => '092020',
                'CVV2' => '456',
                'FIRSTNAME' => 'Jane',
                'LASTNAME' => 'Doe',
                'STREET' => '25 Pacifica',
                'CITY' => 'Irvine',
                'STATE' => 'CA',
                'COUNTRYCODE' => 'US',
                'ZIP' => '92618',
                'AMT' => 0.1,
                'CURRENCYCODE' => 'USD',
                'DESC' => 'Testing Payments Pro'
                );

// Loop through $request_params array to generate the NVP string.
$nvp_string = '';

foreach($request_params as $var=>$val)
{
$nvp_string .= '&'.$var.'='.urlencode($val);
}

 $curl = curl_init();
    curl_setopt($curl, CURLOPT_VERBOSE, 1);
    curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, FALSE);
    curl_setopt($curl, CURLOPT_TIMEOUT, 30);
    curl_setopt($curl, CURLOPT_URL, $api_endpoint);
    curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($curl, CURLOPT_POSTFIELDS, $nvp_string);

  $result = curl_exec($curl);

   $result_array = NVPToArray($result);


print_r($result_array);exit;

?>