I tried to install PHP4.06 on a Cobalt Raq3 and had no shortage of problems.
Turns out its an Apache problem with the Raq3's, as per:
http://www.phpbuilder.com/forum/read.php3?num=3&id=106614&thread=105813
So I have to install 4.05 instead, which is fine. Problem is I've already
run configure,
> I succeded compiling it from sources in a cobal raq 3, but canot make
> work the httpd goes down because y get this error when i restart it
>
> Setting up Web Service: Syntax error on line 33 of
> /etc/httpd/conf/httpd.conf:
> Cannot load /usr/lib/apache/libphp4.so into server: libmysqlclien