diff --git a/test.php b/test.php
index 2bc8fb6..3783c36 100644
--- a/test.php
+++ b/test.php
@@ -7,12 +7,12 @@
     $m = floor($sec/60);
     $s = floor($sec%60);
     //link to mysql
-    $con = mysqli_connect("localhost","buptStudent","buptStudentlx","buptStudentdb");
+    $con=mysqli_connect("localhost","buptStudent","buptStudentlx","buptStudentdb");
     if (!$con){die('Could not connect: '.mysql_error());}
     //mysql_select_db("my_db_test", $con);
     //name & student_id
     $chongfu="SELECT Student_ID FROM UserAnswer WHERE Student_ID=$_POST[student_id]";
-    if(mysql_fetch_array(mysql_query($chongfu,$con))[0]==$_POST[student_id])
+    if(mysqli_fetch_array(mysql_query($chongfu,$con))[0]==$_POST[student_id])
     {
       die('对不起，您已参与过本活动。');
     }