pg_num_fields Returns the number of fields in a result &reftitle.description; intpg_num_fields resourceresult pg_num_fields returns the number of fields (columns) in a PostgreSQL result resource. This function used to be called pg_numfields. &reftitle.parameters; result PostgreSQL query result resource, returned by pg_query, pg_query_params or pg_execute (among others). &reftitle.returnvalues; The number of fields (columns) in the result. On error, -1 is returned. &reftitle.examples; <function>pg_num_fields</function> example ]]> &example.outputs; &reftitle.seealso; pg_num_rows pg_affected_rows