I'm setting up SuExec/FastCGId-based PHP webhosting, and I'd like to set the upload_tmp_dir directive to a different path for each separate user.
I've done several google searches on php cgi upload_tmp_dir environment variable and I've found a whole lot of references indicating that it's possible to do this by setting an environment variable, but no hits on what the variable in question should be named.
What am I missing?
ETA: Because the php process is called from CGI rather than mod_php I can't use the php_admin_value directive in the apache virtualhost config.
