Posted by J.O. Aho on 01/12/06 00:49

John wrote:
> Hi
>
> What are the differences between versions 4.3.9 and 4.4.1? Basically I am
> trying to find our if a version 4.4.1 app has a good chance of breaking on a
> 4.3.9 system?

The three number system means the following

Major_version.Minor_version.patch_level

Changes on the "patch level" is fixes of bugs in the software, don't introduce
new features in normal cases.

Changes on the "minor version" can include new feature or default behavior
changes.

Changes on the "major version" do often include many new features and can even
be major changes in the source code.


When it comes to the major version 4 of php, there has mainly been default
behavior changes between the minor changes. The biggest change was between
4.0.x to 4.1.0. For a full list of changes, you can take a look at
http://www.php.net/ChangeLog-4.php
I can say there aren't any major changes between 4.3.9 and 4.4.1 and most
things that works in 4.4.1 will work in 4.3.9, there can be a few extreme
cases where things may not work, but those will be easy to notice and fix.

Many times you can see notes about the changes in the online manual
http://www.php.net/manual/en/

If you want to know more about a bug, you can use the bugzilla and search for
it (entering a bugnumber is possible too) http://bugs.php.net/search.php



//Aho

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