The Exhibit module for Drupal specifies a minimum requirement for PHP 5.2 to function correctly, but unfortunately, my web-hosting provider only supports version 5.1.6 at this time. However, one of the main motivations for me to explore Drupal was the modules and framework to support the Semantic Web. So I tested Exhibit, RDF and OpenCalais modules and all of them appear to install and function correctly.

All it needed was a minor change to the .info files. Simply comment out the PHP v5.2 requirement from the following files:

1. exhibit/exhibit.info
2. exhibit/contrib/exhibit_core/exhibit_core.info
3. exhibit/contrib/exhibit_sparql/exhibit_sparql.info
4. exhibit/contrib/exhibit_views/exhibit_views.info
5. rdf/rdf.info
6. rdf/contrib/rdf_schema/rdf_schema.info
7. sparql/sparql.info

Fortunately OpenCalais did not require any modifications, but its dependency on the RDF module implies that it too had required version 5.2 installed.

It isn't too difficult to modify the codes... all it needed was someone to find out whether it could work!