protected function query_insert_id ( $tableName, $primaryKey = null )
    {
        $sequenceName = $tableName;
        if ($primaryKey) {
            $sequenceName .= "_$primaryKey";
        }
        $sequenceName .= '_seq';

        $sql = "
            SELECT
                CURRVAL('%s')
                ";
        $args = array($sql, $sequenceName);
        $sql = $this->sql_printf($args);
        if (!($res = pg_query($this->conn, $sql))) {
            return 0;
        }
        $val = pg_fetch_row($res, 0);
        if ($val && isset($val[0])) {
            $val = $val[0];
        }

        pg_free_result($res);
        return $val;
    }
protected function query_insert_id ( $tableName, $primaryKey = null )
    {
        $sequenceName = $tableName;
        if ($primaryKey) {
            $sequenceName .= "_$primaryKey";
        }
        $sequenceName .= '_seq';

        $sql = "
            SELECT
                CURRVAL('%s')
                ";
        $args = array($sql, $sequenceName);
        $sql = $this->sql_printf($args);
        if (!($res = pg_query($this->conn, $sql))) {
            return 0;
        }
        $val = pg_fetch_row($res, 0);
        if ($val && isset($val[0])) {
            $val = $val[0];
        }

        pg_free_result($res);
        return $val;
    }
protected function query_insert_id ( $ tableName , $ primaryKey = null ) { $ sequenceName = $ tableName ; if ( $ primaryKey ) { $ sequenceName .= "_$primaryKey" ; } $ sequenceName .= '_seq' ; $ sql = "
            SELECT
                CURRVAL('%s')
                " ; $ args = array ( $ sql , $ sequenceName ) ; $ sql = $ this -> sql_printf ( $ args ) ; if ( ! ( $ res = pg_query ( $ this -> conn , $ sql ) ) ) { return 0 ; } $ val = pg_fetch_row ( $ res , 0 ) ; if ( $ val && isset ( $ val [ 0 ] ) ) { $ val = $ val [ 0 ] ; } pg_free_result ( $ res ) ; return $ val ; }
Return the id of the last inserted row

@return int
Return the id of the last inserted row