how to run sparql query against local rdf file in php

Question

I have wrote some SPARQL queries against DBPedia's SPARQL endpoint, because sometimes this endpoint is not available. I have downloaded some RDF files (e.g. counties.rdf).

How can I run my queries against the RDF file? I tried replacing the address of the endpoint with my local path but it does not work.

Example:

 var url = "http://dbpedia.org/sparql";   == http://localhost/myfile/india.rdf
 var query = "
     PREFIX dbpedia2: <http://dbpedia.org/resource/>
     PREFIX ABs: <http://dbpedia.org/ontology/>
     SELECT ?capital
     WHERE {
         ?s dbpedia2:India\"@en;\ abs:capital ?capital\ 
     }";

Answer 1

I have not really used PHP and RDF together. Instead, I did it using Python. There we had a library called "rdflib" which can be used to load an RDF in an object, and then execute SPARQL queries on it.

I think there is something like this in PHP. After some "googling", I came by easyrdf which seems to be quite similar. Their documentation provides a bunch of examples in which I see something like "Making a SPARQL SELECT query". Hope it helps

Edit note: This example does not work for a local file. EasyRDF requires an http / https endpoint.