Deobfuscate php exploit (repost)

Hello experts! Today I need someone who can analyze and deobfuscate some malicious PHP code we had (website exploit). We also need to know what was the purpose of it (install malware, steal files, redirect the website, file manager..?). We would also like to know how you achieved the decrypting (knowledge is power!) :) Here is the code: [login to view URL] We will most likely go with the lowest price (budget is short!!) or with someone who can assure us he is able to decrypt it 100%! :) Thank you!