[PHP] Question about set_time_out and shell_exec

[Suhas]

Hi,

I am trying to write a script which will avoid browser timeout problem and
in that process I have created 2 files

FILE1.php:
set_time_out(1);
echo shell_exec("/usr/local/bin/php -f FILE2.php &");

FILE2.php:
@mail($to,$sub,$msg);
sleep(60);
@mail($to,$sub,$msg);

I run File1.php thr' browser and I get 2 emails 1 min apart. But browser
does not timeout and PHP also does not throw error about timeout even if I
have specified time limit to 1sec.

Is there any explanation to this behaviour?

Thanks in adv.

SP