pg_query creates wrong query

Hi there, I'm new to PHP, especially to the db-functions. I've got a problem querying my PostgreSQL server using pg_query. The Tables i'm working on contain colume names with uppercase letters. Working on those tables directly with psql, the client program delivered with postgresql, works like expected. Its case-sensitive, so you have to specify the table names with the correct case of the letters. But pg_query seems to convert all queries into lowercase. A query like: INSERT INTO users (UsrLoginName, UsrPassword) VALUES ... results in an errormessage like: PHP Warning: pg_query() query failed: ERROR: Relation 'users' does not have attribute 'usrloginname' ... What did i do wrong? Or is it a problem with the postgresql db-package of PHP? I think, if the backend is case-sensitive, PHP's functions should be case-sensitiv, too! Please don't tell me to convert all tables/colums to lowercase! My config: Apache 2.0.40 + PHP 4.2.2 + PostgreSQL 7.2.2 Thanks in advance, Sascha