'C：\ wmic'不被识别为内部或外部命令，可操作程序或批处理文件

Question

I want to display in a browser the load percentage of a cpu trough php. This is the code I am using:

$command ="C:\\wmic cpu get loadpercentage"; 
echo shell_exec("$command 2>&1 ; echo $?" );

This is the output:

'C:\wmic' is not recognized as an internal or external command, operable program or batch file.

What am I missing?

Update - 1

Change the code to allow spaces between words: $command ="C:\\wmic^ cpu^ get^ loadpercentage";

'C:\wmic cpu get loadpercentage' is not recognized as an internal or external command, operable program or batch file.

Now the entire line of code is being read, not only 'C:\wmic'

Answer 1

You have two problems, both of which we explored in the comments above:

1. The actual WMIC binary is located at C:\Windows\System32\wbem\WMIC.exe, not C:\wmic. That path needs to be used in your PHP command.

2. You are trying to use Unix-style shell concepts (redirecting STDERR to STDOUT, chaining commands with ;, and using echo and $?) on a Windows system.

   Simply running the command without all that stuff should work:

   echo shell_exec("C:\\Windows\\System32\\wbem\\WMIC.exe cpu get loadpercentage");