include php in template URL REWRITE

[justoverclock]

ok i read this

Converts raw link information into an appropriate URL Verifies that the requested linktype can be handled

void fetch_seo_url (string $link, array $linkinfo, [array $pageinfo = null], [string $primaryid = null], [string $primarytitle = null])
string $link: Type of link, 'thread', etc
array $linkinfo: Specific information relevant to the page being linked to, $threadinfo, etc
array $pageinfo: Other information relevant to the page being linked to
string $primaryid: Override the default $linkinfo[userid] with $linkinfo[$primaryid]
string $primarytitle: Override the default $linkinfo[title] with $linkinfo[$primarytitle]

now the question is?.this code should go in the plugin? in the template? in my file.php?