feat(phase-3): add hot/cold number analysis with period filter

application/admin/controller/History.php

@@ -22,7 +22,7 @@ class History extends Backend
      * 无需额外权限检查的方法（但仍在 admin 模块内，需要 admin 登录）
      * @var array
      */
-    protected $noNeedRight = ['missingNum', 'trendData'];
+    protected $noNeedRight = ['missingNum', 'trendData', 'hotColdNumbers'];
 
     public function _initialize()
     {
@@ -72,5 +72,25 @@ class History extends Backend
         }
     }
 
+    /**
+     * 获取冷热号码
+     * @return void
+     */
+    public function hotColdNumbers()
+    {
+        if ($this->request->isAjax()) {
+            $periods = $this->request->get('periods', 30, 'intval');
+            if ($periods < 10 || $periods > 100) {
+                $this->error('期数范围必须在 10-100 之间');
+            }
+            $type = $this->request->get('type', 'all');
+            if (!in_array($type, ['all', 'special'])) {
+                $this->error('查询类型不正确');
+            }
+            $result = $this->model->getHotColdNumbers($periods, $type);
+            $this->success('查询成功', null, $result);
+        }
+    }
+
 
 }

application/admin/lang/zh-cn/history.php

@@ -17,4 +17,5 @@ return [
     'Special Only' => '仅特码',
     'Trend Chart' => '走势图',
     'No data available' => '暂无数据',
+    'Hot/Cold Analysis' => '冷热分析',
 ];

application/admin/model/History.php

@@ -74,6 +74,69 @@ class History extends Model
         ];
     }
 
+    /**
+     * 获取冷热号码
+     * @param int $periods 查询最近多少期
+     * @param string $type 查询类型 all=全部号码 special=仅特码
+     * @return array {hot: [], cold: [], all: []}
+     */
+    public function getHotColdNumbers($periods = 30, $type = 'all')
+    {
+        $num_model = new Num();
+        $colorMap = $num_model->column('color', 'num');
+        $animalMap = $num_model->column('animal', 'num');
+
+        $history = $this
+            ->field('expect,num1,num2,num3,num4,num5,num6,num7,openTime')
+            ->order('openTime', 'desc')
+            ->limit($periods)
+            ->select();
+
+        if (empty($history)) {
+            return ['hot' => [], 'cold' => [], 'all' => []];
+        }
+
+        $fields = ($type === 'special') ? ['num7'] : ['num1', 'num2', 'num3', 'num4', 'num5', 'num6', 'num7'];
+
+        // 统计每个号码的出现次数
+        $count = array_fill(1, 49, 0);
+        $totalAppearances = 0;
+        foreach ($history as $row) {
+            foreach ($fields as $field) {
+                $num = (int)$row[$field];
+                if ($num >= 1 && $num <= 49) {
+                    $count[$num]++;
+                    $totalAppearances++;
+                }
+            }
+        }
+
+        $all = [];
+        for ($num = 1; $num <= 49; $num++) {
+            $percent = $totalAppearances > 0 ? round($count[$num] / $totalAppearances * 100, 1) : 0;
+            $all[] = [
+                'num' => $num,
+                'count' => $count[$num],
+                'percent' => $percent,
+                'color' => $colorMap[$num] ?? '—',
+                'animal' => $animalMap[$num] ?? '—'
+            ];
+        }
+
+        // 按出现次数降序排序
+        $sorted = $all;
+        usort($sorted, function ($a, $b) {
+            return $b['count'] - $a['count'];
+        });
+
+        // 热号: top 10, 冷号: bottom 10
+        $hot = array_slice($sorted, 0, 10);
+        $cold = array_slice($sorted, -10);
+        $cold = array_reverse($cold);
+
+        return ['hot' => $hot, 'cold' => $cold, 'all' => $all];
+    }
+
     /**
      * 计算遗漏号码
      * @param int $periods 查询最近多少期

application/admin/view/history/index.html

@@ -9,6 +9,7 @@
                         <a href="javascript:;" class="btn btn-primary btn-refresh" title="{:__('Refresh')}" ><i class="fa fa-refresh"></i> </a>
                         <a href="javascript:;" class="btn btn-warning btn-missingnum" title="{:__('Missing Number Analysis')}"><i class="fa fa-search"></i> {:__('Missing Number Analysis')}</a>
                         <a href="javascript:;" class="btn btn-info btn-trend" title="{:__('Trend Chart')}"><i class="fa fa-area-chart"></i> {:__('Trend Chart')}</a>
+                        <a href="javascript:;" class="btn btn-danger btn-hotcold" title="{:__('Hot/Cold Analysis')}"><i class="fa fa-fire"></i> {:__('Hot/Cold Analysis')}</a>
 <!--                        <a href="javascript:;" class="btn btn-success btn-add {:$auth->check('history/add')?'':'hide'}" title="{:__('Add')}" ><i class="fa fa-plus"></i> {:__('Add')}</a>-->
                     </div>
                     <table id="table" class="table table-striped table-bordered table-hover table-nowrap"