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Date: Tue, 16 Sep 2008 14:31:09 +0200
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Subject: php-initialized
From: vrana@php.net (Jakub Vrana)

Hello!

PHP allows to work with uninitialized variables. E_NOTICE error level
can be used to warn before it but this is not perfect for two reasons:

1. E_NOTICE doesn't warn before adding elements to uninitialized
arrays. It is further explained by Etienne Kneuss:
http://www.colder.ch/news/09-09-2005/4/another-example-showing-t.html

2. E_NOTICE is emitted in a run-time and not in a compile-time which
can be late (the error is spotted in the same time as abused).

To solve both problems, I've developed a program checking the usage of
uninitialized variables from outside the script without running it:
http://code.google.com/p/php-initialized/

Maybe the same concept can be used in the PHP compile-time.

Jakub Vrana