Unable To Make Changes To Php.ini

i'm trying to configure PHP, as I really need to turn magic quotes off and raise the memory limit. i don't want to use .htaccess - too many sites

I got plesk 8.2.1, php5.1

well, to make it short, I ran 'phpinfo()' to see where php.ini was: etc/php.ini

I change that, restart httpd, nothing happens. restart the server, nothing still. my changes are not applied when I run 'phpinfo()' again.

i try 'locate php.ini' from the terminal, there are a few!

/usr/local/psa/admin/conf/php.ini
/usr/local/psa/admin/conf/php.ini.def
/usr/local/sitebuilder/php.ini
/etc/php.ini
/etc/php.ini.
/etc/php.ini.saved_by_psa
/etc/php.ini.rpmsave

... plus some in the opt folder (that should be just the cache, uh?)

the problem is that I tried to open all of them, to see where the hell php was getting the settings from, but none of them seem to reflect php's settings.

meaning, I don't know what file I can use to configure PHP.

all of them, for instance, say 'memory_limit: 32M', but php is set at 8M, and phpinfo() tells me memory_limit 8M.

any idea why this might be happening?

does Plesk have some tool to configure PHP that makes PHP ignore my changes?