Apache2 restart from PHP ?

[Leszek <kefflar@gmail.com>]

Helo, 

I'm using debian etch and try to use exec command from php to restart apache2. I wrote a bash script.sh witch contain line like this: 

/etc/init.d/apache2 restart 

and added line 
www-data ALL = (root) NOPASSWD: /var/www/script.sh

When I do: 
1. # su www-data 
2. $ /var/www/script.sh 
apache restarting with no problems, but when I do the same using in php file 

exec("/usr/bin/sudo /var/www/script.sh"); 

apache is going down with the message in error.log:

[notice] caught SIGTERM, shutting down

What I do wrong ?

P.S. Sorry for my poor english.