Error handling

Hi, I'm new to PHP; I installed version 5.0.3 using Apache 2 and Postgres 8 on Win XP SP2. I have a connection class and one of its methods is: public function EjecutaSQL($pe_textoSQL = "") { return pg_query($this->id, $pe_textoSQL); } where $pe_textoSQL contains the SQL sentence. If after executing it there is a Constraint error sent by the DB for example, or a syntax error in the SQL statement, no error or warning is displayed in the browser, unless I use "pg_last_error()" and handle the error myself. I checked the PHP.ini and I have the parameter "error_reporting = E_ALL" Testing these examples on PHP 4, adjusting all the necesary code to run from 5 to 4, all warnings and errors are displayed as sent by PostgreSQL. Any help will be appreciated, Thanx Guillermo N