create directory in Linux

I have add this line in using visudo command
nobody ALL=NOPASSWD: /bin/mkdir

##/etc/sudoers

Now trying to execute this php script:

$output = shell_exec('mkdir /home/aaaa');
echo "<pre>$output</pre>";

But the directory is not created

 

Regardless of the need for password, sudo prefix is a must.

 

check permissions of the folder you are creating directory in...
or use chmod to set permissions

 

make sure that the command shell_exec() is enabled by your host. Most host now disable that function. check your php configuration file to see if its disabled. You can also try