Well, i got it after all, but it's easy to get another close number to the correct one by mistake without cheating for an old number..

Nice level, but i somehow miscalculated the sum and wrote a number that logged me as cheater before getting the correct one.
Actually i calculated again and now my sum it's still over with 2... weird.

Lol, i knew the idea from the beginning but started on looking on a wrong track .
Thanks, another nice level .

2 cookies and a letter/piece of paper; i typed some words related to these but they don't work, and i don't know how these cookies are called if they have a name or a specific word related with cookies with letters

Do i have to know something special about php or the word in the title related to php or just think of a word?

Playing levels like -5 and -7 simply makes you love this game