I am using drupal 7 and zen theme. And am not able to override the theme_pager using zen_pager function in template.php. Any suggestion pls?
If you are using Zen, you are probably writing a sub-theme. Inside its template.php you will have to prefix the
theme_pager function with your sub-theme name, like
pretty_pager if yout sub-theme is called "pretty".
Zen will clear the caches for you, but if it doesn't work, try clearing the caches manually. The Devel Themer module will help you check which theme function is being called.