News Feed

News Archive
Looking for more information on how to do PHP the right way? Check out PHP: The Right Way

Gareth Heyes' Blog:
Non alphanumeric code in PHP
September 23, 2011 @ 10:05:47

Gareth Heyes has tried out an interesting experiment - running non-alphanumeric code in PHP using only octal escapes.

So a small php shell was tweeted around and it inspired me to investigate a way to execute non-alphanumeric code. First off I started with the idea of using octal escapes in PHP and constructing the escape so for example: 107 is "G" if I could construct the "107" and add the backslash to the beginning maybe I could construct "G".

A snippet of example code is included showing his octal-based code for creating a "G" (6 lines of pluses, parentheses, equals and a few more characters). By doing some trickery with bitwise operators on strings, he was able to combine characters and make the string "GET". Pretty clever, even if it's not entirely practical.

0 comments voice your opinion now!
nonalphanumeric code shell loop octal

blog comments powered by Disqus

Similar Posts

PHPEverywhere: Octalpussy

Daniel Cousineau's Blog: Displaying N-Deep Trees (Remember Your Algorithms Course?)

Pantheon Blog: Please License Your Code

PHPKitchen: PHP Gets a Respectable Shell At Last

Project: - Online PHP Code Analysis

Community Events

Don't see your event here?
Let us know!

conference series community application development tips api release code developer deployment laravel framework list podcast introduction threedevsandamaybe zendserver interview language

All content copyright, 2014 :: - Powered by the Solar PHP Framework