PHP将一个数字分成若干个数相加

直接上代码

 
    public function pintuan(){

            // 示例用法
            $number = 10; // 要分成几加几加几
            $parts = 3;  //  分成3个数相加
            $result = $this-> splitNumber($number, $parts);
            
            echo implode(' + ', $result) . ' = ' . array_sum($result);
             
        
    }
 
   public function splitNumber($number, $parts) {
            if ($parts <= 1) {
                return [$number];
            }
        
            $minValue = 1;
            $maxValue = $number - ($parts - 1);
        
            $result = [];
            for ($i = 1; $i <= $parts - 1; $i++) {
                $part = mt_rand($minValue, $maxValue);
                $result[] = $part;
                $number -= $part;
                $maxValue = $number - ($parts - $i - 1);
            }
        
            $result[] = $number;
        
            return $result;
        }

运行结果