Index: branches/5.2.x/units/helpers/order_helper.php
===================================================================
diff -u -N -r14797 -r14813
--- branches/5.2.x/units/helpers/order_helper.php	(.../order_helper.php)	(revision 14797)
+++ branches/5.2.x/units/helpers/order_helper.php	(.../order_helper.php)	(revision 14813)
@@ -165,4 +165,34 @@
 
 			return $template;
 		}
+
+		/**
+		 * Detects credit card type by it's number
+		 *
+		 * @param string $number
+		 * @return int
+		 * @access public
+		 */
+		public function getCreditCartType($number)
+		{
+			// Get rid of any non-digits
+			$number = preg_replace('/[^\d]/', '', $number);
+
+			$mapping = Array (
+				'/^4.{15}$|^4.{12}$/' => 1, // Visa
+				'/^5[1-5].{14}$/' => 2, // MasterCard
+				'/^3[47].{13}$/' => 3, // American Express
+				'/^6011.{12}$/' => 4, // Discover
+				'/^30[0-5].{11}$|^3[68].{12}$/' => 5, // Diners Club
+				'/^3.{15}$|^2131|1800.{11}$/' => 6, // JBC
+			);
+
+			foreach ($mapping as $number_regex => $card_type) {
+				if ( preg_match($number_regex, $number) ) {
+					return $card_type;
+				}
+			}
+
+			return false;
+		}
 	}