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PHP import_request_variables() vs extract()
if you want to run old code that relies on register_globals temporarily, make sure you use one of the non-overwriting extract_type values such as EXTR_SKIP and be aware that you should extract in the same order that's defined in variables_order within the php.ini Infact extract() has a EXTR_SKIP flag that implement this bhreaviuw: If there is a collision, don't overwrite the existing variable. U..PHP import_request_variables() arbitrary variable overwrite
SummaryUsing import_request_variables() you can overwrite $_* and $* (any php variable). Systems AffectedPHP >=4.0.7 From the PHP manual: [quote] Imports GET/POST/Cookie variables into the global scope. It is useful if you disable register_globals, but would like to see some variables in the global scope. [/quote] So import_request_variables() emulate register globals on and is a bit different f..PHP 5.2.1 Released
[08-Feb-2007] The PHP development team would like to announce the immediate availability of PHP 5.2.1. This release is a major stability and security enhancement of the 5.X branch, and all users are strongly encouraged to upgrade to it as soon as possible. Further details about this release can be found in the release announcement 5.2.1, the full list of changes is available in the ChangeLog PHP..php local buffer underflow could lead to arbitary code execution
Affected versions: php 5.1.4 and older, 4.4.3 and possibly older Cause: when php-s sscanf functions format argument contains argument swap and extra arguments are given like. sscanf('foo ','$1s',$bar) then it reads an pointer to pointer to zval structure past the end of argument array by one. Php developers were notified and response and patching was quick. php bug tracker thread here: http://bu..PHP encryption for the common man
In this increasingly virtual online world, you have to becareful to protect your data. Learn the basics of encoding andencrypting important bits of information, such as passwords, creditcard numbers, and even entire messages. Get an overview of what itmeans to encrypt and decrypt information, as well as some practicalexamples involving passwords and other data, using PHP's built-infunctionality...