Notice appears in PHP $ _ SERVER ['argv ']

In PHP $ _ SERVER [argv], notice php $ _ SERVER [argv] appears.

Http: // localhost/demo. php? A = 123 & B = 132
Output:
Notice: Undefined index: args in F: \ php \ www \ demo. php on line 35

What's going on? please give us some advice.

Reply to discussion (solution)

$ _ SERVER ['argv'] is used to obtain command line parameters in cli mode.
$ _ GET is used to obtain url parameters

Well, thank you. I just found
Http://stackoverflow.com/questions/9270030/serverargv-with-http-get-and-cli-issue
A little clear, not in English