lainchan/templates/themes/sitemap/theme.php

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<?php
require 'info.php';
function sitemap_build($action, $settings, $board) {
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global $config;
// Possible values for $action:
// - all (rebuild everything, initialization)
// - news (news has been updated)
// - boards (board list changed)
// - post (a post has been made)
// - thread (a thread has been made)
if ($action != 'post' && $action != 'post-thread' && $action != 'post-delete')
return;
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$boards = explode(' ', $settings['boards']);
$threads = array();
foreach ($boards as $board) {
$query = query(sprintf("SELECT `id` AS `thread_id`, (SELECT `time` FROM ``posts_%s`` WHERE `thread` = `thread_id` OR `id` = `thread_id` ORDER BY `time` DESC LIMIT 1) AS `lastmod` FROM ``posts_%s`` WHERE `thread` IS NULL", $board, $board)) or error(db_error());
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$threads[$board] = $query->fetchAll(PDO::FETCH_ASSOC);
}
file_write($settings['path'], Element('themes/sitemap/sitemap.xml', Array(
'settings' => $settings,
'config' => $config,
'threads' => $threads,
'boards' => $boards,
)));
}