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Suhosin is a php protection software that some systems are using to better protect their servers from misuse. It has the possibility of causing interference, too, and that's what Ghia asked you to check out on your new server.
To check for suhosin as well as to see the various configuration settings of php on your server, if you make a php file with this single line:
and place it on your server (maybe as info.php) and then run the file on the web server (as
http://www.myserver.com/info.php), you'll see what your PHP settings are and if suhosin is installed.
You may be able to override settings (some or all) depending on how things are setup at your ISP. You can either do this
in your .htaccess file, or through
a similar methodology using a custom php.ini (coupled with your .htaccess file). It depends on your host's setup as to which will work for you (if they allow overrides at all).