RDF API functions
Last modified: February 17, 2008 - 06:48
Statement-centric queries
- rdf_exists($subject[, $predicate, $object, $options])
- Determines whether a given statement exists.
- rdf_count($subject[, $predicate, $object, $options])
- Returns the number of matching statements.
- rdf_query($subject[, $predicate, $object, $options])
- Finds all statements matching a given triple pattern.
Statement-centric operations
- rdf_insert_all($statements[, $options])
- Inserts multiple new statements.
- rdf_insert($subject[, $predicate, $object, $options])
- Inserts a new statement.
- rdf_delete_all($statements[, $options])
- Deletes multiple existing statements.
- rdf_delete($subject[, $predicate, $object, $options])
- Deletes an existing statement.
RDF/PHP normalization
- rdf_normalize()
- rdf_denormalize()
RDF/PHP serialization
- rdf_serialize()
- rdf_unserialize()
URIs, blank nodes and literals
- rdf_triple()
- rdf_uriref()
- rdf_bnode()
- rdf_datetime()
- rdf_literal()
Helper functions
- rdf_is_local_uri()
- rdf_is_valid_uri()
- rdf_is_valid_curie()
- rdf_is_valid_qname()
- rdf_get_uuid()
- rdf_get_datatype()
Miscellaneous
- rdf_get_formats()
- rdf_get_repositories()
- rdf_get_namespaces()
- rdf_get_contexts()
- rdf_add_autodiscovery_link()
- Adds an RDF auto-discovery <link> tag to the page's <head> element.
Repository selection
- rdf_use_repository([$name])
- Limits future queries and operations to a particular repository.
Vocabulary definition
- rdf_define_vocabulary($class_name, $base_uri, $properties)
- Defines an RDF vocabulary class for predicate URI construction based on a given base URI and a set of properties.