Michael Heilemann. If you have Dunstan's Time Since installed, this plugin uses it for the title="" attributes on the comments and posts. (For WordPress 1.5)
Author: Brian Meidell
Author URI: http://meidell.dk/
Version 1.5: Now works without LOCK TABLE and CREATE TEMPORARY TABLE priviledges.
Version 1.5.1: Can't remember what I did here
Version 1.5.2: Fixed count select statement to not include spammy comments
Version 1.5.3: Properly excludes track- and pingbacks
Version 1.5.4: Excludes posts that are not published, even if they have comments
Version 1.5.5: Fade old comments, fixed bug that wreaked havoc with Time Since
Version 1.5.6: Bugfix from Jonas Rabbe (http://www.jonas.rabbe.com/) pertaining to timesince
Version 1.5.7: Bugfix so old colors can be darker than new colors (stupid oversight), thanks to http://spiri.dk for spotting it.
Bugfix where single digit hex would cause invalid colors, thanks to http://www.wereldkeuken.be/ for the fix.
Version 1.5.8: Updated to work with WordPress 2.1 alpha by M. Heilemann.
*/
function blc_latest_comments($num_posts = 5, $num_comments = 6, $hide_pingbacks_and_trackbacks = true, $prefix = "
", $postfix = "
", $fade_old = true, $range_in_days = 10, $new_col = "#444444", $old_col = "#cccccc")
{
global $wpdb;
function clamp($min, $max, $val)
{
return max($min,min($max,$val));
}
$usetimesince = function_exists('time_since'); // Work nicely with Dunstan's Time Since plugin (adapted by Michael Heilemann)
// This is compensating for the lack of subqueries in mysql 3.x
// The approach used in previous versions needed the user to
// have database lock and create tmp table priviledges.
// This uses more queries and manual DISTINCT code, but it works with just select privs.
if(!$hide_pingbacks_and_trackbacks)
$ping = "";
else
$ping = "AND comment_type<>'pingback' AND comment_type<>'trackback'";
$posts = $wpdb->get_results("SELECT
comment_post_ID, post_title
FROM ($wpdb->comments LEFT JOIN $wpdb->posts ON (comment_post_ID = ID))
WHERE comment_approved = '1'
AND $wpdb->posts.post_status='publish'
$ping
ORDER BY comment_date DESC;");
$seen = array();
$num = 0;
if($fade_old)
{
$max_time = $range_in_days * 24 * 60 * 60 ;
$r_new = hexdec(substr($new_col, 1, 2));
$r_old = hexdec(substr($old_col, 1, 2));
//$r_min = min($min, $max);
//$r_max = max($min, $max);
$r_range = ($r_old-$r_new);
$g_new = hexdec(substr($new_col, 3, 2));
$g_old = hexdec(substr($old_col, 3, 2));
//$g_min = min($min, $max);
//$g_max = max($min, $max);
$g_range = ($g_old-$g_new);
$b_new = hexdec(substr($new_col, 5, 2));
$b_old = hexdec(substr($old_col, 5, 2));
//$b_min = min($min, $max);
//$b_max = max($min, $max);
$b_range = ($b_old-$b_new);
}
// print "ranges: $r_range, $g_range, $b_range ";
// print "r: ".(0.5*$r_range+$r_new)." ";
foreach($posts as $post)
{
// The following 5 lines is a manual DISTINCT and LIMIT,
// since mysql 3.x doesn't allow you to control which way a DISTINCT
// select merges multiple entries.
if(array_key_exists($post->comment_post_ID, $seen))
continue;
$seen[$post->comment_post_ID] = true;
if($num++ > $num_posts)
break;
$commenters = $wpdb->get_results("SELECT *, UNIX_TIMESTAMP(comment_date) AS unixdate FROM $wpdb->comments
WHERE comment_approved = '1'
AND comment_post_ID = '".$post->comment_post_ID."'
$ping
ORDER BY comment_date DESC
LIMIT $num_comments;");
$count = $wpdb->get_var("SELECT COUNT(comment_ID) AS c FROM $wpdb->comments WHERE comment_post_ID = $post->comment_post_ID AND comment_approved = '1' ".$ping);
$i = 0;
$link = get_permalink($post->comment_post_ID);
if($usetimesince)
$title = " title=\"Last comment was ".time_since($comment->unixdate)." ago\"";
else
$title = "";
echo $prefix."".stripslashes($post->post_title). "".$count." \n";
foreach($commenters as $commenter)
{
if($usetimesince)
$title = " title=\"Posted ".time_since($commenter->unixdate)." ago\"";
if($fade_old)
{
$diff = time() - $commenter->unixdate;
$r = round($diff/$max_time*($r_range))+$r_new;
$r = clamp(min($r_new, $r_old), max($r_new, $r_old), $r);
$g = round($diff/$max_time*($g_range))+$g_new;
$g = clamp(min($g_new, $g_old), max($g_new, $g_old), $g);
$b = round($diff/$max_time*($b_range))+$b_new;
$b = clamp(min($b_new, $b_old), max($b_new, $b_old), $b);
$r_hex = str_pad(dechex($r), 2, '0', STR_PAD_LEFT);
$g_hex = str_pad(dechex($g), 2, '0', STR_PAD_LEFT);
$b_hex = str_pad(dechex($r), 2, '0', STR_PAD_LEFT);
$colstr = " style=\"color: #".$r_hex.$g_hex.$b_hex.";\"";
}
if($i++ > 0)
echo ", ";
echo "comment_ID."\"$title>".stripslashes($commenter->comment_author)."";
}
if($count > $num_comments)
echo " [...]";
echo "".$postfix."\n";
}
}
?>
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