写SQL日志可能会出现乱码

```
What steps will reproduce the problem?
1. 那个htmlentities()
 htmlspecialchars ( $debug_sql )
换成这个就OK了。
2.
3.

What is the expected output? What do you see instead?


Please use labels and text to provide additional information.

```

Original issue reported on code.google.com by `602...@gmail.com` on 13 Mar 2012 at 4:55
