Download
http://silk.apana.org.au/php/download/php4.3.9-os2.zip
or
http://apache.org/~bjh/apache/download/php4.3.9-os2.zip
"PHP is a popular scripting language most commonly used with a web server to produce dynamically generated web page."
PHP for OS/2 Web Site
http://silk.apana.org.au/php/
Source: Piggy