exec功能不起作用

Question

<?php
    exec("whoami");

?>

I can be more explicit with the code . Although When I'm trying to call the php file with my browser nothing happens (of course I'm using apache and the whole).

Note : The safe_mode is activated, I'm using php5, php interpreter seems to be nice when running other functions, I'm a ubuntu user.

Then what is wrong?

Answer 1

I think you're looking for the echo function. Executing whoami using the exec function will run the program but show you nothing… you want to spit out the result too.

echo exec("whoami");