Why does the currency form use link like this?

[yellow1912]

    $content .= zen_draw_form('currencies_form', zen_href_link(basename(ereg_replace('.php','', $PHP_SELF)), '', $request_type, false), 'get'); 

I feel it's a bit weird? Why do we remove .php from the link?

[yellow1912]

I think I got it, but still feel a bit weird. It's kinda inconsistent with the other forms (use current_page and zen_get_all_params for the form's action)