A little php

[chiffre]

Finally I got it

But one question: What is really calculated here, or in other words what does the php-solver do?

[pSub]

I think there is nothing special about the calculation.
It is a bit manipulation with xor [0].

10001101001110111 = 72311
10101110110110101 = 89525

00100011111000010 = 18370

[0] http://en.wikipedia.org/wiki/Xor

[Masti6]

I did this with Netbeans PHP application, but I was left curious, so I tried this with Python, and succeeded:

Code: Select all

#A little PHP
x = 72311
y = 89525
k = x ^ y
print k

Pretty simple imho, PHP is way more complicated, and this is alot simpler than that PHP one. Again, imo. But it was pretty simple. And I had neither no idea that I could just XOR it between the values.
This was a nice challenge, altho a hard one for those who might not have any experience in PHP;
How to install the environment aka XAMPP, NetBeans, etc.
Translating the code into Python would've been ever better if I was a first-timer in PHP and wouldn't have had the programs needed.

[keiya]

The PHP one was deliberately obfuscated. The only tricky part for me was remembering whether php used ^ for xor or exponentiation.

[Aghamemnon]

just use the calculator that comes with Windows

[pyro3o7]

I just ran the equation through python

[JFox]

It is easy, you just have to know how to read an escaped PHP string. Then I just entered 72311^89525 in my JavaScript console, and copy-pasted the result.