shell_exec stopped working?

[Anon]

I have this code:

<?php
echo(shell_exec("host " . $dns));
?>

and it returns nothing. It was working fine last week.

This is the URL which leads to the script:

http://cdns1.cronomagic.com/~asrar/cmagic/shell_script.php?dns=dns5.cronomagic.com

any ideas what could be wrong?

[Anon]

I have a co-worker that was just bitten by this, I'm researching this now... He has a program that was doing a shell_exec() that works fine until I run one of my own mod_perl programs on the same apache server.

mod_php4 and mod_perl are both installed as DSO's ...

Not sure where to start. shell_exec() appears to be truncating arguments to it's internal exec() syscall after each time the mod_perl script is run!!! Yikes!

If you find the same symptoms, please let me know.

-Bryan Shannon