wpseek mobile

Returns an array of URL hosts which are considered to be internal hosts.By default the list of internal hosts is comprised of the host name of the site's home_url() (as parsed by wp_parse_url()). This list is used when determining if a specified URL is a link to a page on the site itself or a link offsite (to an external host). This is used, for example, when determining if the "nofollow" attribute should be applied to a link.

wp_insert_post, wp_initial_constants, wp_untrash_post, wp_filter_post_kses, wp_is_internal_link

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