修改

Application/Base/Service/PromoteGradeService.class.php

@@ -40,7 +40,7 @@ class PromoteGradeService
 
         $config = [];
         $config['reach_level'] = $params['level'];
-        $config['grades'] = $params['grades'];
+        $config['grades'] = $this->sortGrades($params['grades']);
         $config['default_grade_name'] = $params['default_grade_name'];
 
         $data = [];
@@ -59,9 +59,20 @@ class PromoteGradeService
         }
     }
 
-    private function checkGrades($grades)
+    private function sortGrades($grades)
     {
+        if (count($grades) == 0) {
+            return $grades;
+        }   
+        $values = [];
+        $symbols = [];
+        foreach ($grades as $key => $row) {
+            $values[$key]  = $row['value'];
+            $symbols[$key]  = $row['symbol'];
+        }
 
+        array_multisort($values, SORT_ASC, $symbols, SORT_ASC, $grades);
+        return $grades;
     }
 
     public function getCurrentSetting($promote)
@@ -145,7 +156,7 @@ class PromoteGradeService
                 $gradeName = $config['default_grade_name'];
                 break;
             }
-            $nextGrade = $grade[$key + 1] ?? null;
+            $nextGrade = $grades[$key + 1] ?? null;
             if ($this->isBigger($value, $grade) && !$this->isBigger($value, $nextGrade)) {
                 $gradeName = $grade['name'];
                 break;