Which function is useful when you want to output the executed command result?
system()
Correct:
system()
Explanation:
`system() is just like the C version of the function in that it executes the given command and outputs the result.
The system() call also tries to automatically flush the web server's output buffer after each line of output if PHP is running as a server module.
If you need to execute a command and have all the data from the command passed directly back without any interference, use the passthru() function.
Reference: https://www.php.net/manual/en/function.system.php