http://www.phperz.com/article/14/0615/95.html
http://www.kuqin.com/shuoit/20141101/342963.html
http://www.tuicool.com/articles/r6fuem
http://my.oschina.net/melonol/blog/127441?fromerr=7LXJYXpb

05-08 08:02