Hrm.. it's really hard to tell them something when they wont pull their fingers out of their ears.
No offense, but it seems like you are dealing with resellers who rely on pointy clicky web hosting widgets and really have no clue how the underlying technology works.
If the tech can't admit he doesn't know.. he should at least offer to email the question to a sysadmin who does know and get his answer back to you. "I dont know but I can try and find out" is a completly acceptable answer in my book. Granted a timely response is unlikely, but 5 -10 business days is reasonable.
The syntax in question here has to do with what version of Apache you run and how it is configured to handle htacess file . There are also occasional nuances with how PHP support was added to Apache, but .. and I reiterate " the version of PHP is really irrelevant at this point since the script isn't even being executed. "
Furthermore, you may not even be allowed to use the types of directives required, if your webhost has customized the apache config files.. or rather your webhost pointy/clicky upgraded something and got global security tweaks they are unaware of. They have full control over what you can and can't do in a .htaccess file. Whether they are aware of it or not, they may be inadvertently preventing you from using safe and accepted methods to create scripts that URL wise, behave like dynamic folders.
I can't help but wonder, do they even know where the httpd.conf file entry is for your site ?
Are you prevented from using all or only certain directives via .htacess files?
eg.. Is there a global "AllowOverride None" someone where in the httpd.conf file?
If not, what does AllowOverride it allow ?
AllowOverride is documented here..
http://httpd.apache.org/docs/2.2/mod/core.html#allowoverride
and for the record, yes I have it running on PHP 5.25 and Apache 2.2.8 using this
syntax in my .htaccess file
ForceType application/x-httpd-php
ForceType for Apache 2.2 is documented here ..
http://httpd.apache.org/docs/2.2/mod/core.html#forcetype
Perhaps your host would find this helpful ?
http://httpd.apache.org/docs/2.2/howto/htaccess.html