PHP后门程序，在任意目录可写的情况下，允许创建任何类型的文本文件，当Safe_Mode关闭时，还允许执行系统命令

1.5功能列表(基于1.0):

增加4个执行命令的函数

修正几个细节

1.0功能列表:

一个Web后门，在任意目录可写的情况下，允许创建任何类型的文本文件，当Safe_Mode关闭时，还允许执行系统命令。 -PHP backdoor, in the case of any directory can be written to allow the creation of any type of text file, when the Safe_Mode is closed, but also allows the implementation of system commands

1.5 function list (based on 1):

Add 4 functions to　 commands.

Fixed several details

1 function list:

A Web backdoor that allows you to create any type of text file in any directory, and also allows the execution of the system command when the Safe_Mode is closed.