validate_url(&$url)
convert_ascii($str)
process($url, $data)
convert_xml($str)
limit_characters($str[, $n = 500[, $end_char = '…']])
class CI_Trackback $data = array('url' => '', 'title' => '', 'excerpt' => '', 'blog_name'
data($item)
get_id($url)
send_success()
set_error($msg)
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