kashire/lainchan
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Performance: Use only one query for validating >>X links in posts

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This commit is contained in:
Michael Foster 2013-08-29 12:52:31 +10:00
parent d7fc5adc22
commit 577a8b991d
1 changed files with 23 additions and 9 deletions
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32
inc/functions.php
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@ -1576,29 +1576,41 @@ function markup(&$body, $track_cites = false) {
$skip_chars = 0;
$body_tmp = $body;
$search_cites = array();
foreach ($cites as $matches) {
$search_cites[] = '`id` = ' . $matches[2][0];
}
$search_cites = array_unique($search_cites);
$query = query(sprintf('SELECT `thread`, `id` FROM ``posts_%s`` WHERE ' .
implode(' OR ', $search_cites), $board['uri'])) or error(db_error());
$cited_posts = array();
while ($cited = $query->fetch(PDO::FETCH_ASSOC)) {
$cited_posts[$cited['id']] = $cited['thread'] ? $cited['thread'] : false;
}
foreach ($cites as $matches) {
$cite = $matches[2][0];
$query = prepare(sprintf("SELECT `thread`,`id` FROM ``posts_%s`` WHERE `id` = :id LIMIT 1", $board['uri']));
$query->bindValue(':id', $cite);
$query->execute() or error(db_error($query));
// preg_match_all is not multibyte-safe
foreach ($matches as &$match) {
$match[1] = mb_strlen(substr($body_tmp, 0, $match[1]));
}
if ($post = $query->fetch(PDO::FETCH_ASSOC)) {
if (isset($cited_posts[$cite])) {
$replacement = '<a onclick="highlightReply(\''.$cite.'\');" href="' .
$config['root'] . $board['dir'] . $config['dir']['res'] . ($post['thread']?$post['thread']:$post['id']) . '.html#' . $cite . '">' .
'&gt;&gt;' . $cite .
'</a>';
$config['root'] . $board['dir'] . $config['dir']['res'] .
($cited_posts[$cite] ? $cited_posts[$cite] : $cite) . '.html#' . $cite . '">' .
'&gt;&gt;' . $cite .
'</a>';
$body = mb_substr_replace($body, $matches[1][0] . $replacement . $matches[3][0], $matches[0][1] + $skip_chars, mb_strlen($matches[0][0]));
$skip_chars += mb_strlen($matches[1][0] . $replacement . $matches[3][0]) - mb_strlen($matches[0][0]);
if ($track_cites && $config['track_cites'])
$tracked_cites[] = array($board['uri'], $post['id']);
$tracked_cites[] = array($board['uri'], $cite);
}
}
}
@ -1612,6 +1624,8 @@ function markup(&$body, $track_cites = false) {
$skip_chars = 0;
$body_tmp = $body;
// TODO: Make this use fewer queries, similar to local board cites.
foreach ($cites as $matches) {
$_board = $matches[2][0];
$cite = @$matches[3][0];