No chance, been through what your going through like 10 years ago.
Here's how you protect yourself. Make a new site and content, straight away take a backup and tar the files and database. Store locally. From time to time rip off the db for any new content you made, add that to your folder dated obviously.
Zip ensures no files added that you're unaware of.
Once hacked, accept it, wipe server clean reinstall old site new passwords everywhere. Rinse and repeat.
Heres an idea of my password security, I haven't been hacked in 3 years : V)Hvjck8_,DTH.d~
Now this site, get your content and bin the files, make new wp install, follow steps above. Cheaper than having it cleaned and way more effective.
Asking to have that php junk you sent above translated would require a php dev that charges proper $$$$ and even then, it's not like documented readable code, which is already not easy to read in some cases
