Updated README.md

Author: gnongsie

README.md

@@ -1,59 +1,125 @@
 # CyberSource PHP Client
-This is the PHP client for the [CyberSource SOAP Toolkit API](http://www.cybersource.com/developers/getting_started/integration_methods/soap_toolkit_api).
 
-[![Build Status](https://travis-ci.org/CyberSource/cybersource-sdk-php.png?branch=master)](https://travis-ci.org/CyberSource/cybersource-sdk-php)
+This is the PHP client for the [CyberSource Simple Order API](https://www.cybersource.com/en-us/support/technical-documentation/apis-and-integration.html#simple).
+
+## Important Notice
+
+From version 1.0.4, the CyberSource PHP SDK has completely shifted to P12 authentication.
+
+You can upgrade to P12 Authentication in your application by doing the following:
+
+- Create a P12 certificate.
+- Update the files in your project directory.
+- Add your certificate information to your code.
+
+You must upgrade the SOAP Authentication to use P12 by February 13, 2025.
+
+### Prerequisites
+
+You must create a P12 certificate. See the [REST Getting Started Developer Guide](https://developer.cybersource.com/docs/cybs/en-us/platform/developer/all/rest/rest-getting-started/restgs-jwt-message-intro/restgs-security-p12-intro.html).
 
 ## Packagist
+
 The cybersource/sdk-php is available at [Packagist](https://packagist.org/packages/cybersource/sdk-php).
-If you want to install SDK from Packagist,add the following dependency to your application's 'composer.json'.
+
+If you want to install SDK from Packagist,add the following dependency to your application's `composer.json`.
+
 ```json
 "require": {
   "cybersource/sdk-php": "*"
-  },
+},
 ```
+
 ## Prerequisites
 
 - PHP 7.3 or above
+
    - [curl](http://php.net/manual/en/book.curl.php), [openssl](http://php.net/manual/en/book.openssl.php), [soap](http://php.net/manual/en/book.soap.php) extensions must be enabled
+
 - A CyberSource account. You can create an evaluation account [here](http://www.cybersource.com/register/).
-- A CyberSource transaction key. You will need to set your merchant ID and transaction key in the ````cybs.ini```` file in ````lib/conf````. Instructions on obtaining a transaction key can be found [here](http://www.cybersource.com/developers/integration_methods/simple_order_and_soap_toolkit_api/soap_api/html/wwhelp/wwhimpl/js/html/wwhelp.htm#href=Intro.04.3.html).
+
+- A P12 certificate. Instructions on obtaining a P12 certificate can be found [here](https://developer.cybersource.com/docs/cybs/en-us/platform/developer/all/rest/rest-getting-started/restgs-jwt-message-intro/restgs-security-p12-intro.html).
 
 ## Installation
-You can install the client either via [Composer](https://getcomposer.org/) or manually. Before installing, make sure to configure the merchant ID, transaction key, and the appropriate WSDL file URL in ````cybs.ini````. By default, the WSDL file for the client is for API version 1.120 (the latest when this package was updated). Available WSDL file URLs can be browsed at the following locations:
 
-- [test](https://ics2wstest.ic3.com/commerce/1.x/transactionProcessor/)
-- [live](https://ics2ws.ic3.com/commerce/1.x/transactionProcessor/)
+You can install the client either via [Composer](https://getcomposer.org/) or manually.
 
-### Installing with Composer
-You'll first need to make sure you have Composer installed. You can follow the instructions on the [official web site](https://getcomposer.org/download/). Once Composer is installed, you can enter the project root and run:
-```
-Linux: composer.phar install
-Windows: composer install
-```
-If you already have composer installed for the project, you'll need to run the update command as below
-```
-Linux: composer.phar update
-Windows: composer update
+Before installing, make sure that the following data is present in the `cybs.ini` file:
+
+```text
+merchant_id     = "YOUR_MERCHANT_ID"
+
+; Modify the URL to point to either a live or test WSDL file with the desired API version.
+wsdl            = "https://ics2wstest.ic3.com/commerce/1.x/transactionProcessor/CyberSourceTransaction_1.219.wsdl"
+
+; Modify the URL to point to either a live or test WSDL file with the desired API version for the name-value pairs transaction API.
+nvp_wsdl        = "https://ics2wstest.ic3.com/commerce/1.x/transactionProcessor/CyberSourceTransaction_NVP_1.219.wsdl"
+
+[SSL]
+KEY_ALIAS       = 'YOUR_KEY_ALIAS'
+KEY_FILE        = 'YOUR_CERTIFICATE_FILE'
+KEY_PASS        = 'YOUR_KEY_PASS'
+KEY_DIRECTORY   = 'PATH_TO_CERTIFICATE'
 ```
 
+By default, the WSDL file for the client is for API version **1.219**. Available WSDL file URLs can be browsed at the following locations:
+
+- [Test Endpoints](https://ics2wstest.ic3.com/commerce/1.x/transactionProcessor/)
+- [Live Endpoints](https://ics2ws.ic3.com/commerce/1.x/transactionProcessor/)
+
+### Installing with Composer
+
+You'll first need to make sure you have Composer installed. You can follow the instructions on the [official website](https://getcomposer.org/download/).
+
+Once Composer is installed, you can enter the project root and run:
+
+- On Windows:
+  ```cmd
+  composer install
+  ```
+
+- On Linux:
+  ```bash
+  composer.phar install
+  ```
+
+If you already have composer installed for the project, you'll need to run the `update` command as below:
+
+- On Windows:
+  ```cmd
+  composer update
+  ```
+
+- On Linux:
+  ```bash
+  composer.phar update
+  ```
+
 Then, to use the client, you'll need to include the Composer-generated autoload file:
 
 ```php
 require_once('/path/to/project/vendor/autoload.php');
 ```
 
 ### Manual installation
+
 To use the client manually, include the CyberSource client in your project:
 
 ```php
-require_once('/path/to/project/lib/CybsSoapClient.php');
+require_once('/<path_to_vendor_folder>/lib/CybsSoapClient.php');
 ```
 
 ## Getting Started
+
 The PHP client will generate the request message headers for you, and will contain the methods specified by the WSDL file.
 
 ### Creating a simple request
-The main method you'll use is ````runTransaction()````. To run a transaction, you'll first need to construct a client to generate a request object, which you can populate with the necessary fields (see [documentation](http://www.cybersource.com/developers/integration_methods/simple_order_and_soap_toolkit_api/soap_api/html/wwhelp/wwhimpl/js/html/wwhelp.htm#href=Intro.04.4.html) for sample requests). The object will be converted into XML, so the properties of the object will need to correspond to the correct XML format.
+
+The main method you'll use is `runTransaction()`.
+
+To run a transaction, you'll first need to construct a client to generate a request object, which you can populate with the necessary fields (see [documentation](http://www.cybersource.com/developers/integration_methods/simple_order_and_soap_toolkit_api/soap_api/html/wwhelp/wwhimpl/js/html/wwhelp.htm#href=Intro.04.4.html) for sample requests).
+
+The object will be converted into XML, so the properties of the object will need to correspond to the correct XML format.
 
 ```php
 $client = new CybsSoapClient();
@@ -62,21 +128,24 @@ $request = $client->createRequest();
 $card = new stdClass();
 $card->accountNumber = '4111111111111111';
 $card->expirationMonth = '12';
-$card->expirationYear = '2020';
+$card->expirationYear = '2035';
 $request->card = $card;
 
 // Populate $request here with other necessary properties
-
 $reply = $client->runTransaction($request);
 ```
 
 ### Creating a request from XML
-You can create a request from XML either in a file or from an XML string. The XML request format is described in the **Using XML** section [here](http://apps.cybersource.com/library/documentation/dev_guides/Simple_Order_API_Clients/Client_SDK_SO_API.pdf). Here's how to run a transaction from an XML file:
+
+You can also create a request from XML either in a file or from an XML string.
+The XML request format is described in the **Using XML** section [here](http://apps.cybersource.com/library/documentation/dev_guides/Simple_Order_API_Clients/Client_SDK_SO_API.pdf).
+
+Here's how to run a transaction from an XML file:
 
 ```php
 $referenceCode = 'your_merchant_reference_code';
 $client = new CybsSoapClient();
-$reply = $client->runTransactionFromFile('path/to/my.xml', $referenceCode);
+$reply = $client->runTransactionFromFile('path/to/file.xml', $referenceCode);
 ```
 
 Or, you can create your own XML string and use that instead:
@@ -89,44 +158,77 @@ $client->runTransactionFromXml($xml);
 ```
 
 ### Using name-value pairs
-In order to run transactions using name-value pairs, make sure to set the value for the WSDL for the NVP transaction processor in ````cybs.ini````. Then use the ````CybsNameValuePairClient```` as so:
+
+In order to run transactions using name-value pairs, make sure to set the value for the WSDL for the NVP transaction processor in `cybs.ini`. 
+
+Then use the `CybsNameValuePairClient` as follows:
 
 ```php
 $client = new CybsNameValuePairClient();
 $request = array();
 $request['ccAuthService_run'] = 'true';
 $request['merchantID'] = 'my_merchant_id';
 $request['merchantReferenceCode'] = $'my_reference_code';
+
 // Populate $request
 $reply = $client->runTransaction($request);
 ```
 
 ## Running the Samples
-After configuring your merchant ID and transaction key in ````cybs.ini````, the samples in the ````samples```` directory can be run from the project root. For example:
 
-```
+After configuring your merchant ID and transaction key in `cybs.ini`, the samples in the `samples` directory can be run from the project root. 
+
+For example:
+
+```bash
 php samples/Sale.php
 ```
 
-The samples will output the response object for each request if successful. Note that the samples contain test data and should not be run in a live environment.
+The samples will output the response object for each request if successful. 
+
+> > **Note that the samples contain test data and should *NOT* be run in a live environment.**
 
 ## Meta Key support
-Meta Key is a key generated by an entity that can be used to authenticate on behalf of other entities provided that the entity which holds key is a parent entity or associated as a partner.
 
-SOAP PHP SDK supports meta key by default. Additional detail regarding cybs.ini changes.
+Meta Key is a key generated by an entity that can be used to authenticate on behalf of other entities provided that the entity which holds the key is a parent entity or associated as a partner.
 
-merchantID=\<Refers to portfolio or account MID> <br>
-transaction_key=\<Soap password generated for meta key><br>
-Send transacting merchantID in the sample request.
+SOAP PHP SDK supports meta key by default.
 
-## Tests
+### Additional detail regarding `cybs.ini` changes.
 
-In order to run tests, you'll need [PHPUnit](https://phpunit.de). You'll also need to use [Composer](https://getcomposer.org/) for autoloading. If you used Composer to install the client, this should already be set up. Otherwise, to use Composer for autoloading only, from the project root run
-```
-composer.phar dump-autoload
+```text
+merchant_id = <Refers to portfolio or account MID>
+
+[SSL]
+KEY_ALIAS       = 'KEY_ALIAS_GENERATED_FOR_CERTIFICATE'
+KEY_FILE        = 'CERTIFICATE_FILE_GENERATED_FOR_CERTIFICATE'
+KEY_PASS        = 'KEY_PASS_GENERATED_FOR_CERTIFICATE'
+KEY_DIRECTORY   = 'PATH_TO_CERTIFICATE_GENERATED_FOR_METAKEY'
 ```
 
-If you installed PHPUnit with Composer, run the tests from the project root with the command ````vendor/bin/phpunit````.
+Note that the transacting merchant ID needs to be sent in the sample request.
+
+## Tests
+
+In order to run tests, you'll need [PHPUnit](https://phpunit.de).
+
+You'll also need to use [Composer](https://getcomposer.org/) for autoloading.
+
+If you used Composer to install the client, this should already be set up.
+
+Otherwise, to use Composer for autoloading only, from the project root run:
+
+- On Windows:
+  ```cmd
+  composer dump-autoload
+  ```
+
+- On Linux:
+  ```bash
+  composer.phar dump-autoload
+  ```
+
+If you installed PHPUnit with Composer, run the tests from the project root with the command `vendor/bin/phpunit`.
 
 ## Documentation