PayPal Website Payment Pro Script in php

Paypal Website Payments Pro is a new, easy way of accepting online credit card and paypal payments. It allows you to accept CC payments on your website without going through a gateway or setting up a merchant account. This script/module allows you to easily connect to the Paypal Pro servers and process credit cards.
This script works with any PHP or HTML form!
PayPal Pro Direct Payments & Express Checkout Script in PHP

  
<?php
define('API_USERNAME', 'Your_API_USERNAME');
define('API_PASSWORD', 'YourAPI_PASSWORD');
define('API_SIGNATURE', 'Your_API_SIGNATURE');
define('API_ENDPOINT', 'https://api-3t.paypal.com/nvp');
define('USE_PROXY',FALSE);
define('PROXY_HOST', '127.0.0.1');
define('PROXY_PORT', '808');
define('PAYPAL_URL', 'https://www.paypal.com/webscr&cmd=_express-checkout&token=');
define('VERSION', '53.0');

echo "<h3>Processing Tracsaction.......</h3>";

function hash_call($methodName,$nvpStr){

ini_set('max_execution_time', 300);
        //declaring of global variables
        
global $API_Endpoint,$version,$API_UserName,$API_Password,$API_Signature,$nvp_Header;

$API_UserName=API_USERNAME; 

$API_Password=API_PASSWORD;

$API_Signature=API_SIGNATURE;

$API_Endpoint =API_ENDPOINT;


$version=VERSION; 
//setting the curl parameters.
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL,$API_Endpoint);
curl_setopt($ch, CURLOPT_VERBOSE, 1);
//turning off the server and peer verification(TrustManager Concept).
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);       
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE);
curl_setopt($ch, CURLOPT_RETURNTRANSFER,1);
curl_setopt($ch, CURLOPT_POST, 1);
//if USE_PROXY constant set to TRUE in Constants.php, then only proxy will be enabled.
//Set proxy name to PROXY_HOST and port number to PROXY_PORT in constants.php 

if(USE_PROXY)
        //echo CURLOPT_PROXY; 
    curl_setopt ($ch, CURLOPT_PROXY, PROXY_HOST.":".PROXY_PORT);   
        //NVPRequest for submitting to server
        //echo $version;
    $nvpreq="METHOD=".urlencode($methodName)."&VERSION=".urlencode($version)."&PWD=".urlencode($API_Password)."&USER=".urlencode($API_UserName)."&SIGNATURE=".urlencode($API_Signature).$nvpStr;        
        //setting the nvpreq as POST FIELD to curl
         //CURLOPT_POSTFIELDS; 
    curl_setopt($ch,CURLOPT_POSTFIELDS,$nvpreq);        
        //getting response from server
    $response = curl_exec($ch); 
        // echo gettype($response);
        //convrting NVPResponse to an Associative Array
    $nvpResArray = deformatNVP($response); 
    $nvpReqArray = deformatNVP($nvpreq);
    $_SESSION['nvpReqArray'] = $nvpReqArray;

    if (curl_errno($ch)) {
            // moving to display page to display curl errors
        echo $_SESSION['curl_error_no']=curl_errno($ch) ;
        echo $_SESSION['curl_error_msg']=curl_error($ch); die;
        $location = "error.php";
        header("Location: $location");
    }else{
        //closing the curl
        curl_close($ch);
    }   
    return $nvpResArray;
}

function deformatNVP($nvpstr){

    $intial=0;
    $nvpArray = array();
        
    while(strlen($nvpstr)){
        //postion of Key
        $keypos = strpos($nvpstr, '=');
        //position of value
        $valuepos = strpos($nvpstr, '&') ? strpos($nvpstr,'&'): strlen($nvpstr);
    
        /*getting the Key and Value values and storing in a Associative Array*/
        $keyval = substr($nvpstr, $intial, $keypos);
        $valval = substr($nvpstr, $keypos+1, $valuepos-$keypos-1);
        //decoding the respose
        $nvpArray[urldecode($keyval)] = urldecode( $valval);
        $nvpstr = substr($nvpstr, $valuepos+1, strlen($nvpstr));
    }

    return $nvpArray;
}
        $paymentType = $_POST['paymentType'];
        $creditCardType = $_POST['cardType'];
        $creditCardNumber = $_POST['txtCardNumber'];
        $expDateMonth = $_POST['hidmonth'];
        $expDateYear = $_POST['hidyear'];
        $cvv2Number = $_POST['hidSecurityCode'];
        $firstname = $_POST['hidShippingFirstName'];
        $lastname = $_POST['hidShippingLastName'];    
        $addr = $_POST['hidShippingAddress1'];
        $addr1 = $_POST['hidShippingAddress2'];
        $address1 = $addr.' '.$addr1;
        $city = $_POST['hidShippingCity'];
        $state = $_POST['hidShippingState'];
        $zipcode = $_POST['hidShippingPostalCode'];
        $phone = $_POST['hidShippingPhone'];
        $email = $_POST['hidShippingEmail'];
        $countryCode = $_POST['hidShippingcountry'];
        $invoice = $orderId;
        $padDateMonth = str_pad($expDateMonth, 2, '0', STR_PAD_LEFT);
        $currencyCode = "USD";
        $paymentType = urlencode($_POST['paymentType']);    
        $nvpstr = "&PAYMENTACTION=$paymentType&AMT=$amount&CREDITCARDTYPE=$creditCardType&ACCT=$creditCardNumber&EXPDATE=".$padDateMonth.$expDateYear."&CVV2=$cvv2Number&FIRSTNAME=$firstname&LASTNAME=$lastname&STREET=$address1&CITY=$city&STATE=$state".
"&ZIP=$zipcode&COUNTRYCODE=$countryCode&CURRENCYCODE=$currencyCode&EMAIL=$email&INVOICE=$invoice&PHONE=$phone";
        
        $resArray = hash_call("doDirectPayment",$nvpstr); 


        $ack = strtoupper($resArray["ACK"]);
        $amt = $resArray["AMT"];
        $transactionid = $resArray['TRANSACTIONID'];
        $failureMessage = $resArray['L_LONGMESSAGE0'];

        if($ack=='FAILURE'){
          echo "Transaction Failed<br>";
          echo "<b>PayPal Failure Message:</b> ".$failureMessage."<br>";
          echo "<br><br>Kindly check for the above details and Try Again<br>";
        } else {
          echo "Transaction has been completed successfully<br>";
          echo "Paypal Transaction ID: ".$transaction_id."<br>";
          echo "Thank you for shopping with us.";
        }