diff --git a/framework/base/helper.class.php b/framework/base/helper.class.php
index 4af970220e..281da4d3f0 100644
--- a/framework/base/helper.class.php
+++ b/framework/base/helper.class.php
@@ -901,7 +901,7 @@ class baseHelper
         global $config;
         return $config->cache->enable;
     }
-    
+
     /**
      * Generate rand string.
      *
@@ -914,6 +914,66 @@ class baseHelper
         $seeds = str_shuffle('abcdefghijklmnpqrstuvwxyzABCDEFGHIJKLMNPQRSTUVWXYZ123456789');
         return substr($seeds, 0, $length);
     }
+
+    /**
+     * 获取二维数组中的某一列。
+     * Get array column to array.
+     *
+     * @param  array           $input
+     * @param  int|string|null $columnKey
+     * @param  int|string|null $indexKey
+     * @static
+     * @access public
+     * @return array
+     */
+    public static function arrayColumn(array $input, $columnKey, $indexKey = null): array
+    {
+        /* If php version greater than 7, calling system functions returns. */
+        if(defined(PHP_VERSION_ID) && PHP_VERSION_ID >= 70000) return \array_column($input, $columnKey, $indexKey);
+
+        $output = array();
+        foreach($input as $row)
+        {
+            $key    = $value = null;
+            $keySet = $valueSet = false;
+
+            if($indexKey !== null && array_key_exists($indexKey, (array) $row))
+            {
+                $keySet = true;
+                $key    = \is_object($row) ? (string) $row->$indexKey : (string) $row[$indexKey];
+            }
+
+            if(null === $columnKey)
+            {
+                $valueSet = true;
+                $value    = $row;
+            }
+            elseif(\is_array($row) && \array_key_exists($columnKey, $row))
+            {
+                $valueSet = true;
+                $value    = $row[$columnKey];
+            }
+            elseif(\is_object($row) && \property_exists($row, $columnKey))
+            {
+                $valueSet = true;
+                $value    = $row->$columnKey;
+            }
+
+            if($valueSet)
+            {
+                if($keySet)
+                {
+                    $output[$key] = $value;
+                }
+                else
+                {
+                    $output[] = $value;
+                }
+            }
+        }
+
+        return $output;
+    }
 }
 
 //------------------------------- 常用函数。Some tool functions.-------------------------------//
diff --git a/framework/helper.class.php b/framework/helper.class.php
index d22525d5ff..4ac91fbb80 100644
--- a/framework/helper.class.php
+++ b/framework/helper.class.php
@@ -409,66 +409,6 @@ class helper extends baseHelper
                 return (string)$value;
         }
     }
-
-    /**
-     * 获取二维数组中的某一列。
-     * Get array column to array.
-     *
-     * @param  array           $input
-     * @param  int|string|null $columnKey
-     * @param  int|string|null $indexKey
-     * @static
-     * @access public
-     * @return array
-     */
-    public static function arrayColumn(array $input, $columnKey, $indexKey = null): array
-    {
-        /* If php version greater than 7, calling system functions returns. */
-        if(defined(PHP_VERSION_ID) && PHP_VERSION_ID >= 70000) return \array_column($input, $columnKey, $indexKey);
-
-        $output = array();
-        foreach($input as $row)
-        {
-            $key    = $value = null;
-            $keySet = $valueSet = false;
-
-            if($indexKey !== null && array_key_exists($indexKey, (array) $row))
-            {
-                $keySet = true;
-                $key    = \is_object($row) ? (string) $row->$indexKey : (string) $row[$indexKey];
-            }
-
-            if(null === $columnKey)
-            {
-                $valueSet = true;
-                $value    = $row;
-            }
-            elseif(\is_array($row) && \array_key_exists($columnKey, $row))
-            {
-                $valueSet = true;
-                $value    = $row[$columnKey];
-            }
-            elseif(\is_object($row) && \property_exists($row, $columnKey))
-            {
-                $valueSet = true;
-                $value    = $row->$columnKey;
-            }
-
-            if($valueSet)
-            {
-                if($keySet)
-                {
-                    $output[$key] = $value;
-                }
-                else
-                {
-                    $output[] = $value;
-                }
-            }
-        }
-
-        return $output;
-    }
 }
 
 /**