ft_get_option()从哪里获取Wordpress中的数据

I am working on a recently acquired client's WordPress website and am having trouble finding where the values that are being populated from the function call ft_get_option() are coming from.

<?php echo stripslashes( ft_get_option('call_us') ); ?>

I tried navigating to /wp-admin/options.php and did not see anything there that said call_us, could it be from the theme they're using? Robust is the name of the theme, if that helps any.

That function it should be defined in wp-content/themes/robust/functions.php.

If is not in that file, search in each file from wp-content/themes/robust directory, or run a fgrep in you are on a linux machine:

cd wp-content/themes/robust && fgrep -rn 'ft_get_option' *