I need a very small footprint for PHP and php5ts.dll is so much bigger than php4ts.dll.
Will PHPDock run PHP v4.4.7.7 instead of PHP 5?

Thank you.

I see it can - all I have to do is install PHP4 instead of 5 in the php directory.

But I did that in my final application directory and the .php files aren't being recognized as .php files. Is there some other thing I must do or setting I must change in order for PHPDock to recognize that I have put PHP 4 in my app's php folder?

Thank you.

most probably you changed associations in phpdock.ini file. Please check that .php is still associated with application/x-httpd-php:

[MimeTypes]
.php=application/x-httpd-php

and application/x-httpd-php has appropriate CGI/FastCGI handler, like below:

[Handlers]
application/x-httpd-php="C:\path\to\php.exe"

(note that php5's CGI executable is php-cgi.exe while php4's is php.exe)

I must have done something wrong previously because I made some adjustments and it now seems to work. Soory for the trouble.
Perhaps it was needed that I specified:

[Handlers]
application/x-httpd-php=php/php.exe

in phpdock.ini

It seems too bad I have to recompile everything now, though, because Nu-coder doesn't think 2 different versions of PHP.
Too bad it can't just work no matter which version is loaded in phpdock/php.