diff -r 53cff4b4a802 -r bde1974c263b web/wp-content/plugins/related-posts-by-category/related_posts.php
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/web/wp-content/plugins/related-posts-by-category/related_posts.php	Wed Feb 03 15:37:20 2010 +0000
@@ -0,0 +1,67 @@
+<?php
+/*
+Plugin Name: Related Posts by Category
+Plugin URI: http://playground.ebiene.de/400/related-posts-by-category-the-wordpress-plugin-for-similar-posts/
+Description: The WordPress Plugin for similar posts grouped by category. It's small. It's fast. Really.
+Author: Sergej M&uuml;ller
+Version: 0.4
+Author URI: http://www.wpseo.org
+*/
+
+
+function related_posts_by_category($params, $post_id = 0) {
+$entries = array();
+$output = '';
+$limit = 0;
+$type = '';
+$order = '';
+$orderby = '';
+$post_id = intval($post_id);
+if (!$post_id) {
+$post_id = $GLOBALS['post']->ID;
+}
+if (isset($params['limit'])) {
+$limit = intval($params['limit']);
+}
+if (isset($params['type']) && !empty($params['type'])) {
+$type = ($params['type'] == 'page' ? 'page' : 'post');
+}
+if (isset($params['order']) && !empty($params['order'])) {
+$order = (strtoupper($params['order']) == 'DESC' ? 'DESC' : 'ASC');
+}
+if (isset($params['orderby']) && !empty($params['orderby']) && preg_match('/^[a-zA-Z_]+$/', $params['orderby'])) {
+$orderby = $params['orderby'];
+}
+$entries = $GLOBALS['wpdb']->get_results(
+sprintf(
+"SELECT DISTINCT object_id, post_title FROM {$GLOBALS['wpdb']->term_relationships} r, {$GLOBALS['wpdb']->term_taxonomy} t, {$GLOBALS['wpdb']->posts} p WHERE t.term_id IN (SELECT t.term_id FROM {$GLOBALS['wpdb']->term_relationships} r, {$GLOBALS['wpdb']->term_taxonomy} t WHERE r.term_taxonomy_id = t.term_taxonomy_id AND t.taxonomy = 'category' AND r.object_id = $post_id) AND r.term_taxonomy_id = t.term_taxonomy_id AND p.post_status = 'publish' AND p.ID = r.object_id AND object_id <> $post_id %s %s %s",
+($type ? ("AND p.post_type = '" .$type. "'") : ''),
+($orderby ? ('ORDER BY ' .(strtoupper($params['orderby']) == 'RAND' ? 'RAND()' : $orderby. ' ' .$order)) : ''),
+($limit ? ('LIMIT ' .$limit) : '')
+),
+OBJECT
+);
+if ($entries) {
+foreach ($entries as $entry) {
+$output .= sprintf(
+'%s<a href="%s" %s title="%s">%s%s%s</a>%s',
+isset($params['before']) ? $params['before'] : '',
+get_permalink($entry->object_id),
+(isset($params['rel']) ? ('rel="' .$params['rel']. '"') : ''),
+str_replace('"', '&quot;', $entry->post_title),
+isset($params['inside']) ? $params['inside'] : '',
+$entry->post_title,
+isset($params['outside']) ? $params['outside'] : '',
+isset($params['after']) ? $params['after'] : ''
+);
+}
+} else {
+$output = $params['message'];
+}
+if (isset($params['echo']) === true && $params['echo']) {
+echo $output;
+} else {
+return $output;
+}
+}
+?>
\ No newline at end of file