[security] NOT the path of the script in case of error

Hello ! I have a problem with security & found no satisfying solution yet : at home, when an error occurs in my script I got something like this : Warning: unlink() failed (No such file or directory) in c:\program files\easyphp\www\page_perso_free\php_scripts\ultra_php.php on line 356 "texte.txt" n'est pas supprimé... but my provider in the same case delivers this : Warning: unlink() failed (No such file or directory) in ultra_php.php on line 347 "texte.txt" n'est pas supprimé... that's much better !! My question is : How do they do that ?? My provider runs PHP 4.2.2 Thanx a lot !! ps. to this : <?php echo $_SERVER [SERVER_SOFTWARE] ?> my provider returns : Apache/1.3.26 (Unix) Debian GNU/Linux mod_fastcgi/2.2.12 mod_perl/1.26 pps. sorry if I have not sent this message the right way (and for my poor english too)...