grep -r 'HTTP_GET_VARS' . | xargs sed -i 's/HTTP_GET_VARS/_GET/g'
grep -r 'HTTP_POST_VARS' . | xargs sed -i 's/HTTP_POST_VARS/_POST/g'
grep -r 'HTTP_COOKIE_VARS' . | xargs sed -i 's/HTTP_COOKIE_VARS/_COOKIE/g'
grep -r 'HTTP_POST_FILES' . | xargs sed -i 's/HTTP_POST_FILES/_FILES/g'
grep -r 'HTTP_SERVER_VARS' . | xargs sed -i 's/HTTP_SERVER_VARS/_SERVER/g'
grep -r 'HTTP_ENV_VARS' . | xargs sed -i 's/HTTP_ENV_VARS/_ENV/g'