Minor documentation updates

Author: leith

src/Message/AbstractResponse.php

@@ -51,7 +51,7 @@ protected function decodeMerchantParameters($data)
      */
     protected function encryptMessage($message, $key)
     {
-        $iv = implode(array_map("chr", array(0, 0, 0, 0, 0, 0, 0, 0)));
+        $iv = implode(array_map('chr', array(0, 0, 0, 0, 0, 0, 0, 0)));
 
         if (function_exists('mcrypt_encrypt')) {
             $ciphertext = mcrypt_encrypt(MCRYPT_3DES, $key, $message, MCRYPT_MODE_CBC, $iv);

src/Message/CompletePurchaseResponse.php

@@ -17,15 +17,15 @@ class CompletePurchaseResponse extends AbstractResponse
     /** @var boolean */
     protected $usingUpcaseParameters = false;
     /** @var boolean */
-    protected $usingUpcaseResponse   = false;
+    protected $usingUpcaseResponse = false;
 
     /**
      * Constructor
      *
      * @param RequestInterface $request the initiating request.
      * @param mixed $data
      *
-     * @throws InvalidResponseException If order number is missing or signature does not match
+     * @throws InvalidResponseException If merchant data or order number is missing, or signature does not match
      */
     public function __construct(RequestInterface $request, $data)
     {
@@ -90,6 +90,8 @@ public function getData()
     /**
      * Helper method to get a specific merchant parameter if available.
      *
+     * @param string $key The key to look up
+     *
      * @return null|mixed
      */
     protected function getKey($key)

src/Message/PurchaseRequest.php

@@ -9,8 +9,11 @@
  */
 class PurchaseRequest extends AbstractRequest
 {
+    /** @var string */
     protected $liveEndpoint = 'https://sis.redsys.es/sis/realizarPago';
+    /** @var string */
     protected $testEndpoint = 'https://sis-t.redsys.es:25443/sis/realizarPago';
+    /** @var array */
     protected static $consumerLanguages = array(
         'es' => '001', // Spanish
         'en' => '002', // English