Strange code

I have found strange code in all my wordpress files.Some was stored it the error code files 400 thru 500 files. i read the forums in here and thought like they did it was wordfence. Today I don’t think so because I just helped a customer remove 6k of it from his php site. Same code so I contacted my custom server farm support. Results: security says unknown but no threat”benign” was the word used. Engineering: No idea can’t find any function it does,but it came in through applications. So now I’m sending Emails to Softaculous and fantastico Delux also WHM and Cpanel. Will let you know but it is not wordfence. And no they did not put the new user “backdoor” with full admin rights in any installation(from wordfence). I posted this to let everyone know if in error please remove.