feat: 项目基础框架+配置+Kernel

2026-04-29 05:35:00 +08:00
parent 6ce7adcbfb
commit 9a6151fce3
5082 changed files with 437062 additions and 0 deletions
@@ -0,0 +1,42 @@
+<?php
+
+namespace App\Utils;
+
+class Probability
+{
+    //chance为抽到概率，数值越小，概率越小
+    /*
+    $arr = [
+        ['name'=>'1000元手机','chance'=>'1'],
+        ['name'=>'100元代金券','chance'=>'10'],
+        ['name'=>'10元代金券','chance'=>'100'],
+        ['name'=>'谢谢参与','chance'=>'700'],
+    ];
+    */
+
+    /**
+     * 抽奖概率算法
+     * @param array $prizeArr 奖品数组
+     * @param string $index 概率键名
+     * @return mixed 抽到的奖品
+     */
+    public static function lotteryRaffle($prizeArr, $index = 'chance')
+    {
+        $result = null;
+        //数组设为集合
+        $prize = collect($prizeArr);
+        //概率数组的总概率精度
+        $proSum = $prize->sum($index);
+        //概率数组循环
+        $prize->each(function ($item, $key) use (&$proSum, $index, &$result) {
+            $randNum = mt_rand(1, $proSum);
+            $current_chance = $item[$index];
+            if ($randNum <= $current_chance) {
+                $result = $item;
+                return false;
+            }
+            $proSum -= $current_chance;
+        });
+        return $result;
+    }
+}