extend urlencode

Application/Sdk/Controller/ExchangeController.class.php

@@ -173,7 +173,7 @@ class ExchangeController extends BaseController{
 				$request['spend_ip']   = get_client_ip();
 // 				pp($request);
 				file_put_contents("./Application/Sdk/OrderNo/".$request['user_id']."-".$request['game_id'].".txt",think_encrypt(json_encode($request)));
-				$url = C('PAY_DOMAIN') . '/sdk.php?s=/Spend/'.$payPage.'&user_id='.$request['user_id'].'&game_id='.$request['game_id'].'&type=1'.'&user_token='.$userToken.'&action=pay'.'&extend='.$request['extend'];
+				$url = C('PAY_DOMAIN') . '/sdk.php?s=/Spend/'.$payPage.'&user_id='.$request['user_id'].'&game_id='.$request['game_id'].'&type=1'.'&user_token='.$userToken.'&action=pay'.'&extend='.urlencode($request['extend']);
 				echo base64_encode(json_encode(array('status'=>200,'out_trade_no'=>$out_trade_no,'img'=>$url)));exit;
 				// 只走第三方支付  不走苹果支付
 			}elseif(!get_game_appstatus2($request['game_id'])&&$request['is_create_ordernumer']==1){ /* 废弃 苹果支付 */