what i this???

I dont know what is this and wher can I desabel it:

PHP Settings              Current      Required      Status
PHP Version:                5.2.8          5.0+        Good
Register Globals:            Off            Off          Good
Magic Quotes GPC:        On                Off            Error
File Uploads:                  On            On          Good
Session Auto Start:        Off            Off          Good

it do'nt alow me to install
I install opencart and can't work whit it I see just a white page by php eror
what can Ido to fix it?

disable the magic_quotas_gpc option in your php.ini or ask your provider to do this.

This Option is out of date in newer php-versions

how can I disabel it?

Contact your host!

Hello,

Like the others have suggested, there are several options to do it; you can use a .htaccess or a php.ini file to disable the magic quotes directive. Try this post for some guidance: http://forum.opencart.com/viewtopic.php?f=31&t=3112. The installation package also comes with .htaccess and php.ini files to get you started.

my host say if I want to disabel it it will disabel for all users and all of the users may got in problem so he can't disabel it
how can I disabel it form the code?
I want to modify the opencart
who can I modify that to disabel it from codes?

I don't really understand you, but did you check the post linked above yours?
Try a .htaccess file...