Lo puedes encontrar en
http://www.php.net/downloads.phpentras y te aparecera algo asi:
PHP 4.3.10
Complete Source Code
* PHP 4.3.10 (tar.bz2) [3,932Kb] - 15 Dec 2004
md5: 7e56824dae9679c59a8234eb848aa542
* PHP 4.3.10 (tar.gz) [4,778Kb] - 15 Dec 2004
md5: 73f5d1f42e34efa534a09c6091b5a21e
o si es para windows:
Windows Binaries
All Windows binaries can be used on Windows 98/Me and on Windows NT/2000/XP/2003.
* PHP 4.3.10 zip package [7,405Kb] - 15 Dec 2004
(CGI binary plus server API versions for Apache, Apache2 (experimental), ISAPI, NSAPI, Servlet and Pi3Web. MySQL support built-in, many extensions included, packaged as zip)
md5: 0bb30525512ea686abf22c8fe61e1bb6
* PHP 4.3.10 installer [1,052Kb] - 15 Dec 2004
(CGI only, MySQL support built-in, packaged as Windows installer to install and configure PHP, and automatically configure IIS, PWS and Xitami, with manual configuration for other servers. N.B. no external extensions included)
md5: 6d60129d738e16ea0b69f3fd6646bf3a
O buscas en esa pagina, el que gustes descargar
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