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Re: PHP Array and Null Bytes
From: Stefan Lochbihler <steve01 () chello at>
Date: Sat, 11 Nov 2006 21:06:29 +0100
Before i start to read the whole source please tell me if php act according to the rules.
Once again - when i create the following array with apostrophes <http://odge.de/englisch-deutsch/apostrophe.html> in php
arr['\0'] = ... the output from <<print_r>> is as follow: Array( [\0] ...) When i create the array with quotes the output is as follow: arr["\0"] = ... Array ( Null Byte) When i create the array from the url with register globals on arr[%00] the output is as follow: Simply nothing ! PS: read the php source, 'array's are implemented in Zend/zend_hash.cI know that i could do this, but it cost a lot of time and therefor i decided
to ask someone who may had the same problem :-) regards Steve upb schrieb:
read the php source, 'array's are implemented in Zend/zend_hash.c :) On 11/10/06, Stefan Lochbihler <steve01 () chello at> wrote:Hi guys, some questions to NULL Bytes within PHP Arrays. Let us assume there exist a php script with the following code. $erg=$_GET['show'] if(!isset($arr[$erg]) $erg="something"; $arr is a predefined variable but with "register globals on" it would be possible to set your own Array Key. This means when you set $erg=test $arr[test] you could deliver almost every chars you want. My problem is that i want to deliver a content like that. $erg=index.html%00 $arr[index.html%00] The problem is that the Null Byte within the array destroy the array. My question is if there exist a way to avoid the Null Byte within the array. For example (im not really familiar with charsets) to create the Null Byte with the help of f.e. UTF-7 encoded chars. If someone has an idea please let me know. Best regards Steve _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.grok.org.uk/full-disclosure-charter.html Hosted and sponsored by Secunia - http://secunia.com/
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Current thread:
- PHP Array and Null Bytes Stefan Lochbihler (Nov 10)
- Re: PHP Array and Null Bytes upb (Nov 11)
- Re: PHP Array and Null Bytes Stefan Lochbihler (Nov 11)
- Re: PHP Array and Null Bytes upb (Nov 11)