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<?php
function get_the_category($id = false) {
global $post, $category_cache;
if ( !$id )
$id = $post->ID;
if ( !isset($category_cache[$id]) )
update_post_category_cache($id);
$categories = $category_cache[$id];
if ( !empty($categories) )
sort($categories);
else
$categories = array();
return $categories;
}
function get_category_link($category_id) {
global $wp_rewrite;
$catlink = $wp_rewrite->get_category_permastruct();
if ( empty($catlink) ) {
$file = get_settings('home') . '/';
$catlink = $file . '?cat=' . $category_id;
} else {
$category = &get_category($category_id);
$category_nicename = $category->category_nicename;
if ( $parent = $category->category_parent )
$category_nicename = get_category_parents($parent, false, '/', true) . $category_nicename . '/';
$catlink = str_replace('%category%', $category_nicename, $catlink);
$catlink = get_settings('home') . trailingslashit($catlink);
}
return apply_filters('category_link', $catlink, $category_id);
}
function get_the_category_list($separator = '', $parents='') {
$categories = get_the_category();
if (empty($categories))
return apply_filters('the_category', __('Uncategorized'), $separator, $parents);
$thelist = '';
if ( '' == $separator ) {
$thelist .= '<ul class="post-categories">';
foreach ( $categories as $category ) {
$category->cat_name = $category->cat_name;
$thelist .= "\n\t<li>";
switch ( strtolower($parents) ) {
case 'multiple':
if ($category->category_parent)
$thelist .= get_category_parents($category->category_parent, TRUE);
$thelist .= '<a href="' . get_category_link($category->cat_ID) . '" title="' . sprintf(__("View all posts in %s"), $category->cat_name) . '" rel="category tag">'.$category->cat_name.'</a></li>';
break;
case 'single':
$thelist .= '<a href="' . get_category_link($category->cat_ID) . '" title="' . sprintf(__("View all posts in %s"), $category->cat_name) . ' rel="category tag">';
if ($category->category_parent)
$thelist .= get_category_parents($category->category_parent, FALSE);
$thelist .= $category->cat_name.'</a></li>';
break;
case '':
default:
$thelist .= '<a href="' . get_category_link($category->cat_ID) . '" title="' . sprintf(__("View all posts in %s"), $category->cat_name) . '" rel="category tag">'.$category->cat_name.'</a></li>';
}
}
$thelist .= '</ul>';
} else {
$i = 0;
foreach ( $categories as $category ) {
$category->cat_name = $category->cat_name;
if ( 0 < $i )
$thelist .= $separator . ' ';
switch ( strtolower($parents) ) {
case 'multiple':
if ( $category->category_parent )
$thelist .= get_category_parents($category->category_parent, TRUE);
$thelist .= '<a href="' . get_category_link($category->cat_ID) . '" title="' . sprintf(__("View all posts in %s"), $category->cat_name) . '" rel="category tag">'.$category->cat_name.'</a>';
break;
case 'single':
$thelist .= '<a href="' . get_category_link($category->cat_ID) . '" title="' . sprintf(__("View all posts in %s"), $category->cat_name) . '" rel="category tag">';
if ( $category->category_parent )
$thelist .= get_category_parents($category->category_parent, FALSE);
$thelist .= "$category->cat_name</a>";
break;
case '':
default:
$thelist .= '<a href="' . get_category_link($category->cat_ID) . '" title="' . sprintf(__("View all posts in %s"), $category->cat_name) . '" rel="category tag">'.$category->cat_name.'</a>';
}
++$i;
}
}
return apply_filters('the_category', $thelist, $separator, $parents);
}
function the_category($separator = '', $parents='') {
echo get_the_category_list($separator, $parents);
}
function get_the_category_by_ID($cat_ID) {
$cat_ID = (int) $cat_ID;
$category = &get_category($cat_ID);
return $category->cat_name;
}
function get_category_parents($id, $link = FALSE, $separator = '/', $nicename = FALSE){
$chain = '';
$parent = &get_category($id);
if ( $nicename )
$name = $parent->category_nicename;
else
$name = $parent->cat_name;
if ( $parent->category_parent )
$chain .= get_category_parents($parent->category_parent, $link, $separator, $nicename);
if ( $link )
$chain .= '<a href="' . get_category_link($parent->cat_ID) . '" title="' . sprintf(__("View all posts in %s"), $parent->cat_name) . '">'.$name.'</a>' . $separator;
else
$chain .= $name.$separator;
return $chain;
}
function get_category_children($id, $before = '/', $after = '') {
if ( 0 == $id )
return '';
$cat_ids = get_all_category_ids();
foreach ( $cat_ids as $cat_id ) {
if ( $cat_id == $id)
continue;
$category = get_category($cat_id);
if ( $category->category_parent == $id ) {
$chain .= $before.$category->cat_ID.$after;
$chain .= get_category_children($category->cat_ID, $before, $after);
}
}
return $chain;
}
// Deprecated.
function the_category_ID($echo = true) {
// Grab the first cat in the list.
$categories = get_the_category();
$cat = $categories[0]->cat_ID;
if ( $echo )
echo $cat;
return $cat;
}
// Deprecated.
function the_category_head($before='', $after='') {
global $currentcat, $previouscat;
// Grab the first cat in the list.
$categories = get_the_category();
$currentcat = $categories[0]->category_id;
if ( $currentcat != $previouscat ) {
echo $before;
echo get_the_category_by_ID($currentcat);
echo $after;
$previouscat = $currentcat;
}
}
function category_description($category = 0) {
global $cat;
if ( !$category )
$category = $cat;
$category = & get_category($category);
return apply_filters('category_description', $category->category_description, $category->cat_ID);
}
// out of the WordPress loop
function dropdown_cats($optionall = 1, $all = 'All', $sort_column = 'ID', $sort_order = 'asc',
$optiondates = 0, $optioncount = 0, $hide_empty = 1, $optionnone=FALSE,
$selected=0, $hide=0) {
global $wpdb;
if ( ($file == 'blah') || ($file == '') )
$file = get_settings('home') . '/';
if ( !$selected )
$selected=$cat;
$sort_column = 'cat_'.$sort_column;
$query = "
SELECT cat_ID, cat_name, category_nicename,category_parent,
COUNT($wpdb->post2cat.post_id) AS cat_count,
DAYOFMONTH(MAX(post_date)) AS lastday, MONTH(MAX(post_date)) AS lastmonth
FROM $wpdb->categories LEFT JOIN $wpdb->post2cat ON (cat_ID = category_id)
LEFT JOIN $wpdb->posts ON (ID = post_id)
WHERE cat_ID > 0
";
if ( $hide ) {
$query .= " AND cat_ID != $hide";
$query .= get_category_children($hide, " AND cat_ID != ");
}
$query .=" GROUP BY cat_ID";
if ( intval($hide_empty) == 1 )
$query .= " HAVING cat_count > 0";
$query .= " ORDER BY $sort_column $sort_order, post_date DESC";
$categories = $wpdb->get_results($query);
echo "<select name='cat' class='postform'>\n";
if ( intval($optionall) == 1 ) {
$all = apply_filters('list_cats', $all);
echo "\t<option value='0'>$all</option>\n";
}
if ( intval($optionnone) == 1 )
echo "\t<option value='-1'>".__('None')."</option>\n";
if ( $categories ) {
foreach ( $categories as $category ) {
$cat_name = apply_filters('list_cats', $category->cat_name, $category);
echo "\t<option value=\"".$category->cat_ID."\"";
if ( $category->cat_ID == $selected )
echo ' selected="selected"';
echo '>';
echo $cat_name;
if ( intval($optioncount) == 1 )
echo ' ('.$category->cat_count.')';
if ( intval($optiondates) == 1 )
echo ' '.$category->lastday.'/'.$category->lastmonth;
echo "</option>\n";
}
}
echo "</select>\n";
}
// out of the WordPress loop
function wp_list_cats($args = '') {
parse_str($args, $r);
if ( !isset($r['optionall']))
$r['optionall'] = 0;
if ( !isset($r['all']))
$r['all'] = 'All';
if ( !isset($r['sort_column']) )
$r['sort_column'] = 'ID';
if ( !isset($r['sort_order']) )
$r['sort_order'] = 'asc';
if ( !isset($r['file']) )
$r['file'] = '';
if ( !isset($r['list']) )
$r['list'] = true;
if ( !isset($r['optiondates']) )
$r['optiondates'] = 0;
if ( !isset($r['optioncount']) )
$r['optioncount'] = 0;
if ( !isset($r['hide_empty']) )
$r['hide_empty'] = 1;
if ( !isset($r['use_desc_for_title']) )
$r['use_desc_for_title'] = 1;
if ( !isset($r['children']) )
$r['children'] = true;
if ( !isset($r['child_of']) )
$r['child_of'] = 0;
if ( !isset($r['categories']) )
$r['categories'] = 0;
if ( !isset($r['recurse']) )
$r['recurse'] = 0;
if ( !isset($r['feed']) )
$r['feed'] = '';
if ( !isset($r['feed_image']) )
$r['feed_image'] = '';
if ( !isset($r['exclude']) )
$r['exclude'] = '';
if ( !isset($r['hierarchical']) )
$r['hierarchical'] = true;
return list_cats($r['optionall'], $r['all'], $r['sort_column'], $r['sort_order'], $r['file'], $r['list'], $r['optiondates'], $r['optioncount'], $r['hide_empty'], $r['use_desc_for_title'], $r['children'], $r['child_of'], $r['categories'], $r['recurse'], $r['feed'], $r['feed_image'], $r['exclude'], $r['hierarchical']);
}
function list_cats($optionall = 1, $all = 'All', $sort_column = 'ID', $sort_order = 'asc', $file = '', $list = true, $optiondates = 0, $optioncount = 0, $hide_empty = 1, $use_desc_for_title = 1, $children=FALSE, $child_of=0, $categories=0, $recurse=0, $feed = '', $feed_image = '', $exclude = '', $hierarchical=FALSE) {
global $wpdb, $wp_query;
// Optiondates now works
if ( '' == $file )
$file = get_settings('home') . '/';
$exclusions = '';
if ( !empty($exclude) ) {
$excats = preg_split('/[\s,]+/',$exclude);
if ( count($excats) ) {
foreach ( $excats as $excat ) {
$exclusions .= ' AND cat_ID <> ' . intval($excat) . ' ';
}
}
}
$exclusions = apply_filters('list_cats_exclusions', $exclusions );
if ( intval($categories) == 0 ) {
$sort_column = 'cat_'.$sort_column;
$query = "
SELECT cat_ID, cat_name, category_nicename, category_description, category_parent, category_count
FROM $wpdb->categories
WHERE cat_ID > 0 $exclusions
ORDER BY $sort_column $sort_order";
$categories = $wpdb->get_results($query);
}
if ( $optiondates ) {
$cat_dates = $wpdb->get_results(" SELECT category_id,
UNIX_TIMESTAMP( MAX(post_date) ) AS ts
FROM $wpdb->posts, $wpdb->post2cat, $wpdb->categories
WHERE post_status = 'publish' AND post_id = ID $exclusions
GROUP BY category_id");
foreach ( $cat_dates as $cat_date ) {
$category_timestamp["$cat_date->category_id"] = $cat_date->ts;
}
}
$num_found=0;
$thelist = "";
foreach ( $categories as $category ) {
if ( ( intval($hide_empty) == 0 || $category->category_count) && (!$hierarchical || $category->category_parent == $child_of) ) {
$num_found++;
$link = '<a href="'.get_category_link($category->cat_ID).'" ';
if ( $use_desc_for_title == 0 || empty($category->category_description) )
$link .= 'title="'. sprintf(__("View all posts filed under %s"), wp_specialchars($category->cat_name)) . '"';
else
$link .= 'title="' . wp_specialchars(apply_filters('category_description',$category->category_description,$category)) . '"';
$link .= '>';
$link .= apply_filters('list_cats', $category->cat_name, $category).'</a>';
if ( (! empty($feed_image)) || (! empty($feed)) ) {
$link .= ' ';
if ( empty($feed_image) )
$link .= '(';
$link .= '<a href="' . get_category_rss_link(0, $category->cat_ID, $category->category_nicename) . '"';
if ( !empty($feed) ) {
$title = ' title="' . $feed . '"';
$alt = ' alt="' . $feed . '"';
$name = $feed;
$link .= $title;
}
$link .= '>';
if ( !empty($feed_image) )
$link .= "<img src='$feed_image' $alt$title" . ' />';
else
$link .= $name;
$link .= '</a>';
if (empty($feed_image))
$link .= ')';
}
if ( intval($optioncount) == 1 )
$link .= ' ('.intval($category->category_count).')';
if ( $optiondates ) {
if ( $optiondates == 1 )
$optiondates = 'Y-m-d';
$link .= ' ' . gmdate($optiondates, $category_timestamp["$category->cat_ID"]);
}
if ( $list ) {
$thelist .= "\t<li";
if (($category->cat_ID == $wp_query->get_queried_object_id()) && is_category()) {
$thelist .= ' class="current-cat"';
}
$thelist .= ">$link\n";
} else {
$thelist .= "\t$link<br />\n";
}
if ($hierarchical && $children)
$thelist .= list_cats($optionall, $all, $sort_column, $sort_order, $file, $list, $optiondates, $optioncount, $hide_empty, $use_desc_for_title, $hierarchical, $category->cat_ID, $categories, 1, $feed, $feed_image, $exclude, $hierarchical);
if ($list)
$thelist .= "</li>\n";
}
}
if ( !$num_found && !$child_of ) {
if ( $list ) {
$before = '<li>';
$after = '</li>';
}
echo $before . __("No categories") . $after . "\n";
return;
}
if ( $list && $child_of && $num_found && $recurse ) {
$pre = "\t\t<ul class='children'>";
$post = "\t\t</ul>\n";
} else {
$pre = $post = '';
}
$thelist = $pre . $thelist . $post;
if ( $recurse )
return $thelist;
echo apply_filters('list_cats', $thelist);
}
function in_category($category) { // Check if the current post is in the given category
global $category_cache, $post;
if ( isset( $category_cache[$post->ID][$category] ) )
return true;
else
return false;
}
?>
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