From release announcemenet:
After a lengthy QA process, PHP 4.3.4 is finally out!
This is a medium size maintenance release, with a fair number of bug fixes.
All users are encouraged to upgrade to 4.3.4.
Bugfix release
PHP 4.3.4 contains, among others, following important fixes, additions
and improvements:
* Fixed disk_total_space() and disk_free_space() under FreeBSD.
* Fixed FastCGI support on Win32.
* Fixed FastCGI being unable to bind to a specific IP.
* Fixed several bugs in mail() implementation on win32.
* Fixed crashes in a number of functions.
* Fixed compile failure on MacOSX 10.3 Panther.
* Over 60 various bug fixes!
For full list of changes in PHP 4.3.4, see ChangeLog:
http://www.php.net/ChangeLog-4.php#4.3.4
Some highlights of changes since 4.2.3:
* PCRE updated to 4.3, GD to 2.0.15
* improved Apache2 support
* much improved stream & URL wrapper support, output compression support
* added CLI (Command Line Interface) SAPI
* debug_backtrace() backported from ZendEngine2
* faster build system
* huge number of other bug fixes and improvements
Packaging changes:
* 'pcre', 'xml', and 'session' modules folded back into main package -
'pcre' and 'xml' is required by PEAR, and 'session' is just too essential
to be separate
* 'gd' module now uses bundled PHP GD library, which is better integrated
* PHP modules use shared distinfo when possible to ease future PHP updates
* ${PREFIX}/bin/php is now CLI version, ${PREFIX}/libexec/cgi-big/php
remains CGI version
