News Feed
Sections




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

PHPMaster.com: Learning Loops

Pádraic Brady: Composer: Downloading Random Code Is Not A Security Vulnerability?

Codeacy Blog: Your Greatest Code Quality Threats and How to Solve Them

Paul Jones: The Difference Between Factories, Registries, and Service Locators

John Walsh's Blog: PHP Benchmark - For vs While


Community Events





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


library series update interview security version community introduction laravel framework language composer tool voicesoftheelephpant opinion mvc release symfony podcast package

All content copyright, 2014 PHPDeveloper.org :: info@phpdeveloper.org - Powered by the Solar PHP Framework