纯理论,完全是别人东西的再组合。
http://blog.csdn.net/moonpure/article/details/44671773 http://baike.baidu.com/link?url=NNU1TR8S_MEmoXQvmZNq05mlYWgvK-e7b1vzN_yRAQgBV11O537tP5ijShyVYGSPnsJNgXn8DlcY5N8GrZAGEpa2BbaUcpK6AHdlN0wS_FbJjqFS2YUwO6WYRp7PiJAA http://www.cnblogs.com/Leo_wl/p/4281236.html
,
http://jingyan.baidu.com/article/456c463b95e6030a583144b6.html ,
http://www.cnblogs.com/xrq730/p/4954152.html , http://www.thinkphp.cn/code/2510.html
http://blog.csdn.net/dinglang_2009/article/details/46398885 ,,, 2
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