diff --git a/application/api/common.php b/application/api/common.php
index d53f625..268d4d1 100644
--- a/application/api/common.php
+++ b/application/api/common.php
@@ -1,5 +1,7 @@
 <?php
-
+/**
+ * 修改图片为圆形
+ */
 function createRoundImg($imgpath) {
     $ename=getimagesize($imgpath);
     $ename=explode('/',$ename['mime']);