Include "page.php" in "ga-theme-base.php" generates an extra digit (1)

Question

When added to the file ga-theme-base.php code:

$ this-> output (include ('qa-theme \ Default \ sidebar.php'));

Page generate me an additional digit "1" is not in the code of sidebar.php. The figureinserted at the end added code.
I have no idea what generates me the number.

Any ideas?

Answer 1

The include command is returning true, which is output to the browser as a one. Just remove the $this->output(...) around the include statement.