Best Payment Gateway In India - Start Accepting Payments Online with SabPaisa's Online Payment Gateway. Enable Businesses to Collect Payment Online.  

1. Create the Config page name as config.php

config.php

<?php 

    $spURL = null;
    $spDomain = "https://securepay.sabpaisa.in/SabPaisa/sabPaisaInit";    
    $username = "YOUR-USER-NAME";                                      
    $password = "YOUR_PASSWORD";                         
    $clientCode = "YOUR_CLIENT_CODE";                                          
    $authKey = "YOUR-KYE";                          
    $authIV = "YOUR_ENCRIPT_KEY";
    $URLsuccess = "example.com/success_fail.php";
    $URLfailure = "example.com/success_fail.php"; 

?>

2. Authentication.php /* Copy this encrypt code */

<?php

class AesCipher {

    private const OPENSSL_CIPHER_NAME = "aes-128-cbc";
    private const CIPHER_KEY_LEN = 16; 
    private static function fixKey($key) {  
        if (strlen($key) < AesCipher::CIPHER_KEY_LEN) {  
            return str_pad("$key", AesCipher::CIPHER_KEY_LEN, "0"); 
        }

        
        if (strlen($key) > AesCipher::CIPHER_KEY_LEN) {

            return substr($key, 0, AesCipher::CIPHER_KEY_LEN); 

        }

        return $key;

    }

    
    static function encrypt($key, $iv, $data) {
        echo 'Data value is :' .$data;
        $encodedEncryptedData = base64_encode(openssl_encrypt($data, AesCipher::OPENSSL_CIPHER_NAME, AesCipher::fixKey($key), OPENSSL_RAW_DATA, $iv));
        $encodedIV = base64_encode($iv);
        $encryptedPayload = $encodedEncryptedData.":".$encodedIV;
        echo '$encryptedPayload value is :' .$encryptedPayload;
        return $encryptedPayload;
    }

    

    static function decrypt($key,$iv, $data) {
        $parts = explode(':', $data);                      //Separate Encrypted data from iv.
        $encrypted = $parts[0];
        $iv = $parts[1];
        $decryptedData = openssl_decrypt(base64_decode($encrypted), AesCipher::OPENSSL_CIPHER_NAME, AesCipher::fixKey($key), OPENSSL_RAW_DATA, base64_decode($iv));
        return $decryptedData;
    }

}

 ?>

3. order.php

<?php

session_start();
include  'Authentication.php';
include_once('config.php');

 
/* Get User Data From Database */
$aid='1002'; /* User ID */
$fname=trim('Dipankar');
$lname=trim('Biswas');
$applicant_ph=trim('973312121');
$applicant_details_blank="NR";
$cur_applicant_email='xxx@gmail.com';
$order_id='52456' /* Order ID */
$challan_type="ORDER";
$fees=100; /* INR */
$$challan_id=$_REQUEST['order_id'];


if($fees>0)
{
    $rand_start=mt_rand(0,9);
    $programID=$challan_id;  
    // $txnID Seperate by _ and  $challan_id must be 2nd position
    $txnId='Your Uni ID'.'_'.$challan_id.'_'.$challan_type;                        
    $txnAmt = $fees;                                       
    $payerFirstName =$fname;                             
    $payerLastName =$lname;                              
    $payerContact = $applicant_ph;                    
    $payerEmail = $cur_applicant_email;             
    $payerAddress = "NA";
    $spURL ="?clientName=".$clientCode."&usern=".$username."&pass=".$password."&amt=".$txnAmt."&txnId=".$txnId."&firstName=".$payerFirstName."&lstName=".$payerLastName."&contactNo=".$payerContact."&Email=".$payerEmail."&Add=".$payerAddress."&ru=".$URLsuccess."&failureURL=".$URLfailure;
    //echo $spURL;
    $AesCipher = new AesCipher(); 
    $spURL = $AesCipher->encrypt($authKey,$authIV,$spURL); 
    $spURL = str_replace("+", "%2B",$spURL); 
    $spURL="?query=".$spURL."&clientName=".$clientCode;  
    $spURL = $spDomain.$spURL; 
    header("location:".$spURL);
}
else
{
    $error_msg="There was an error with your application. Please try again.";
} 
?> 

4. success_fail.php

<?php 
session_start();
include  'Authentication.php';
include_once('config.php');
$query = $_REQUEST['query'];
$decText = null;
$AesCipher = new AesCipher();
$query = str_replace("%2B","+",$query);
$decText = $AesCipher -> decrypt($authKey, $authIV, $query); 
//$userid = $_SESSION['userid'];
$arr=explode('&', $decText);
$ss=1;
$txnID=$arr[2];
$txnID=explode('=',$txnID);
$txnIDM=$txnID[1];
$txn_ID_my= $arr[6];
$txn_ID_my=explode('=',$txn_ID_my);
$txn_ID_myM=$txn_ID_my[1];
$txIDN=explode('_',$txn_ID_myM);
$txID=$txIDN[1];
$challan_type=$txIDN[2];
$status=$arr[18];
$status=explode('=',$status);
$statusM=$status[1];
if($statusM=="SUCCESS")
{
    $app_or_adm=$sid;
    $transaction_num='odr_'.$txnIDM;
    $now=time();
    if($transaction_num!=null)
    {

    /* Update Database by order id $txID */
    $success_msg="Your payment has been successfully processed. ";
    $error_msg="";
    }

else
{
$error_msg="Cahllan Not Found.";
}
}else{
$error_msg="Sorry payment failed try again ";
} 

?>