Steps for PHP to execute the cmd command

How PHP executes the cmd command

Description
This section is implemented in the context of the WAMP package installation.

First, turn on php.ini, turn off safe mode Safe_mode = off, and then look at the list of disabled functions disable_functions = Proc_open, Popen, exec, system,?shell_exec, remove exec.
PHP Code:

??

Executing the PHP file, you will find a test folder under the D drive.

Reference Documentation:
exec function parsing
EXEC syntax: string exec (String command, string [array], int [return_var]);
EXEC return value:? string

EXEC parameter description
command– commands to execute
array–? is the output value
The return_var– is a return value of 0 or 1, and if return 0 succeeds, the execution fails with return of 1.
exec unsuccessful, debug scenario

Skill Sharing:
With the pipe command, using 2>&1, the command outputs the error of the shell execution to the $output variable, which can be analyzed by outputting the variable.
For example:

EXEC (' Convert a.jpg b.jpg ', $output, $return _val);

?
Modified to:

EXEC (' Convert a.jpg b.jpg 2>&1′, $output, $return _val);p rint_r ($output);

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