Using GPG in Safe Mode

Hello, My ISP have php set for safe mode. And now I'm trying to run gpg from php. Basically I'm trying to run this from exec(): echo "testar testar" | /usr/local/bin/gpg --homedir /home/myuser/ .gnupg -a --always-trust --batch --no-secmem-warning -e -u "Test Test <test@test .com>" -r "Test Test <test@test.com>" When I run it from cli myself it works fine, but it fails when I run it from php. Are there anyway I can get this to work? Sorry if this is OT or an obvious question. /Regards Emil