diff --git a/Sample_Code/PHP/BluePayPayment_BP10Emu.php b/Sample_Code/PHP/BluePayPayment_BP10Emu.php
index 569a00d..44cd2f0 100644
--- a/Sample_Code/PHP/BluePayPayment_BP10Emu.php
+++ b/Sample_Code/PHP/BluePayPayment_BP10Emu.php
@@ -83,7 +83,7 @@ class BluePayPayment_BP10Emu {
   // $accID : Merchant's Account ID
   // $secretKey : Merchant's Secret Key
   // $mode : Transaction mode of either LIVE or TEST (default)
-  public function BluePayPayment_BP10Emu($accID, $secretKey, $mode) {
+  public function __construct($accID, $secretKey, $mode) {
     $this->accountID = $accID;
     $this->secretKey = $secretKey;
     $this->mode = $mode;
@@ -360,7 +360,9 @@ public function http_parse_headers($header) {
     $fields = explode("\r\n", preg_replace('/\x0D\x0A[\x09\x20]+/', ' ', $header));
     foreach( $fields as $field ) {
         if( preg_match('/([^:]+): (.+)/m', $field, $match) ) {
-            $match[1] = preg_replace('/(?<=^|[\x09\x20\x2D])./e', 'strtoupper("\0")', strtolower(trim($match[1])));
+            $match[1] = preg_replace_callback('/(?<=^|[\x09\x20\x2D])./', function ($match) { 
+               return strtoupper($match[0]); 
+            }, strtolower(trim($match[1])));
             if( isset($retVal[$match[1]]) ) {
                 if (!is_array($retVal[$match[1]])) {
                     $retVal[$match[1]] = array($retVal[$match[1]]);