How to install and configure environment variables for wget on win7

How to install and configure the environment variables for wget on win7 download a lot of wget, some are all files, there are files and exe files, learn online installation process and environment variable configuration. However, you can use this command only when you enter this directory on the console. Php exec functions cannot execute this command.
Why ????
The following are the online steps :::
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Double-click installation
2. create a new system environment variable
GNU_HOME = C: \ Program Files \ GnuWin32
3. Add path
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; % GNU_HOME % \ bin
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"

Reply to discussion (solution)

Find the wget directory and add it to the PATH.

You can use this command only when you enter this directory on the console.
This indicates that the wget directory is not added to the system path, which is not commonly used or not required.
At the same time, if php is to be called, it will use the complete path. Otherwise, how can it be run if it cannot be found?

Find the wget directory and add it to the PATH.

It's the same as it's not.

You can use this command only when you enter this directory on the console.
This indicates that the wget directory is not added to the system path, which is not commonly used or not required.
At the same time, if php is to be called, it will use the complete path. Otherwise, how can it be run if it cannot be found?

The entire directory is written, but the wget command is not executed.

You can use this command only when you enter this directory on the console.
This indicates that the wget directory is not added to the system path, which is not commonly used or not required.
At the same time, if php is to be called, it will use the complete path. Otherwise, how can it be run if it cannot be found?

The entire directory is written, but the wget command is not executed.

Changed the wget.

Do not install it in C: \ Program Files
Uninstall and reinstall it in the directory of D: \ Program Files or other non-C disks.
Because C: \ Program Files cannot grant full control to anonymous users

Do not install it in C: \ Program Files
Uninstall and reinstall it in the directory of D: \ Program Files or other non-C disks.
Because C: \ Program Files cannot grant full control to anonymous users

You can. Thank you.

How did it work?