diff --git a/helper.php b/helper.php
new file mode 100644
index 0000000..6a2dbec
--- /dev/null
+++ b/helper.php
@@ -0,0 +1,25 @@
+<?php
+
+if (!function_exists('array_column')) {
+    /**
+     * PHP 版本兼容函数
+     * @param $input
+     * @param $columnKey
+     * @param $indexKey
+     * @return array
+     */
+    function array_column($input, $columnKey, $indexKey = null)
+    {
+        $result = array();
+        foreach ($input as $row) {
+            if (isset($row[$columnKey])) {
+                if ($indexKey !== null && isset($row[$indexKey])) {
+                    $result[$row[$indexKey]] = $row[$columnKey];
+                } else {
+                    $result[] = $row[$columnKey];
+                }
+            }
+        }
+        return $result;
+    }
+}
\ No newline at end of file
diff --git a/include.php b/include.php
index b14e03d..d1da2c0 100644
--- a/include.php
+++ b/include.php
@@ -14,6 +14,8 @@
 // | github 代码仓库：https://github.com/zoujingli/WeChatDeveloper
 // +----------------------------------------------------------------------
 
+include_once __DIR__ . '/helper.php';
+
 spl_autoload_register(function ($classname) {
     $pathname = __DIR__ . DIRECTORY_SEPARATOR;
     $filename = str_replace('\\', DIRECTORY_SEPARATOR, $classname) . '.php';