php exec not working properly on remote server

Question

php functions like exec and shell_exec work fine on localhost but it doesn't work properly on remote host.

$output = shell_exec('dir');

echo "<pre>$output</pre>";

This code gives output in localhost but not at remote server. Any Clue?

Answer 1

This kind of php commands are usually disabled on remote web servers. If you really want them to works, you should use a dedicated server and configure it yourself.

Answer 2

dir command is in windows system, so is your remote server a windows server too?

Even it is a windows server, the configure may be different from your local machine that disables shell_exec

Answer 3

看一下http://php.net/glob或http://php.net/manual/en/class.directoryiterator.php对我来说，执行dir或ls根本没有任何意义。