feat(history): 新增特码冷热查询功能 — 选定某一期向前y期判定冷热号

在history页面添加「特码冷热」按钮，用户可选择指定期号并设定向前期数系统统计该期特码在向前范围内的出现频率，与平均值对比判定冷/温/热号
2026-04-24 19:58:35 +08:00
parent f4c67bd102
commit efdef3798e
7 changed files with 354 additions and 2 deletions
@@ -468,6 +468,106 @@ class History extends Model
        ];
    }

+    /**
+     * 查询指定期号特码在向前y期范围内的冷热状态
+     * @param string|int $expect 指定期号
+     * @param int $lookback 向前推算期数
+     * @return array|false 冷热状态数据，未找到返回false
+     */
+    public function getSpecialHotColdByExpect($expect, $lookback = 30)
+    {
+        // 查询指定期号的数据
+        $target = $this->where('expect', $expect)->field('expect,num7,openTime')->find();
+        if (!$target) {
+            return false;
+        }
+
+        $specialNum = (int)$target['num7'];
+
+        // 查询该期往前lookback期的数据（按openTime排序，取目标期之前的lookback条）
+        $history = $this
+            ->field('expect,num7,openTime')
+            ->where('openTime', '<', $target['openTime'])
+            ->order('openTime', 'desc')
+            ->limit($lookback)
+            ->select();
+
+        $totalPeriods = count($history);
+        if ($totalPeriods === 0) {
+            return [
+                'expect' => (string)$expect,
+                'specialNum' => $specialNum,
+                'lookback' => $lookback,
+                'count' => 0,
+                'avgCount' => 0,
+                'status' => 'cold',
+                'rank' => 0,
+                'totalPeriods' => 0,
+                'allStats' => []
+            ];
+        }
+
+        // 统计lookback范围内每个特码的出现次数
+        $count = array_fill(1, 49, 0);
+        foreach ($history as $row) {
+            $num = (int)$row['num7'];
+            if ($num >= 1 && $num <= 49) {
+                $count[$num]++;
+            }
+        }
+
+        // 计算目标特码的出现次数
+        $targetCount = $count[$specialNum];
+
+        // 计算平均出现次数（49个号码，totalPeriods期）
+        $avgCount = $totalPeriods / 49;
+
+        // 判定冷热
+        $status = 'normal';
+        if ($avgCount > 0) {
+            if ($targetCount > $avgCount * 1.5) {
+                $status = 'hot';
+            } elseif ($targetCount < $avgCount * 0.5) {
+                $status = 'cold';
+            }
+        }
+
+        // 计算排名（按出现次数降序）
+        $sorted = [];
+        for ($num = 1; $num <= 49; $num++) {
+            $sorted[] = ['num' => $num, 'count' => $count[$num]];
+        }
+        usort($sorted, function ($a, $b) {
+            return $b['count'] - $a['count'];
+        });
+
+        $rank = 0;
+        foreach ($sorted as $idx => $item) {
+            if ($item['num'] === $specialNum) {
+                $rank = $idx + 1;
+                break;
+            }
+        }
+
+        // 构建所有号码的统计（只返回top和bottom用于展示）
+        $hotNums = array_slice($sorted, 0, 5);
+        $coldNums = array_slice($sorted, -5);
+        $coldNums = array_reverse($coldNums);
+
+        return [
+            'expect' => (string)$expect,
+            'specialNum' => $specialNum,
+            'lookback' => $lookback,
+            'count' => $targetCount,
+            'avgCount' => round($avgCount, 2),
+            'status' => $status,
+            'rank' => $rank,
+            'totalPeriods' => $totalPeriods,
+            'hotNums' => $hotNums,
+            'coldNums' => $coldNums
+        ];
+    }
+
    /**
     * 特码热力图数据
     * @param int $periods 查询最近多少期