fix bug

app/model/GameBetGameModel.php

@@ -146,7 +146,7 @@ class GameBetGameModel extends Model
                 $item['nickname'] = $users[$userId]['nickname'] ?? '未知用户';
                 $item['balance'] = $userBanlance[$userId]['balance'] ?? 0;
                 // 计算RTP (返还率)
-                $item['rtp'] = calculateRTP(abs($item['total_win']), $item['total_bet']);
+                $item['rtp'] = calculateRTP(abs((float)$item['total_win']), $item['total_bet']);
             }
         }
         
@@ -217,7 +217,7 @@ class GameBetGameModel extends Model
                 $item['nickname'] = $users[$userId]['nickname'] ?? '未知用户';
                 $item['balance'] = $userBanlance[$userId]['balance'] ?? 0;
                 // 计算RTP (返还率)
-                $item['rtp'] = calculateRTP(abs($item['total_lose']), $item['total_bet']);
+                $item['rtp'] = calculateRTP(abs((float)$item['total_lose']), $item['total_bet']);
             }
         }
         
@@ -286,7 +286,7 @@ class GameBetGameModel extends Model
                 $item['nickname'] = $users[$userId]['nickname'] ?? '未知用户';
                 $item['balance'] = $userBanlance[$userId]['balance'] ?? 0;
                 // 计算RTP (返还率)
-                $item['rtp'] = calculateRTP(abs($item['total_win']), $item['total_bet']);
+                $item['rtp'] = calculateRTP(abs((float)$item['total_win']), $item['total_bet']);
             }
         }