1???Session?????

???????????Session???????????????????????????????Session ID???????????????????????????????????????:??????Session ID???Session ID???PHP???????;????Session????????Session??????PHPSESSID?????????cookie???????????????????????????;???????Session ID?????????????????http??????cookies???Session id??Sessioin id???????.?????Session ID??????PHP.ini?????;????URL????????????????????session??????????????????????Session ID????

2??SQL???????

????SQL????????????????SQL????????????????????????????SQL??????????????????????????????????????????:??????????????????????????????????????????????????????????????????????????????????????????;?????????????????bug??????????????????;??????SQL???????????????????????????????????

3???????????

??????????????????????????????????????????????????????????????????????????????????????????????????????????????safe_moade_exec_dir???;???????????????escapeshellarg????;??????????????????;????????????????????

4??????????

??PHP?????????????PHP??????????????PHP?????5.5????????php.ini?????????ruquest_order?GPC????php.ini???????????magic_quotes_runtime??????????????????????????????????????????????????????????????????get_magic_quotes_runtime?????????????????????(???????????)?set_magic_quotes_runtime(0)???