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< ? php
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function get_category_children ( $id , $before = '/' , $after = '' ) {
if ( 0 == $id )
return '' ;
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$chain = '' ;
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$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 ;
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}
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function get_category_link ( $category_id ) {
global $wp_rewrite ;
$catlink = $wp_rewrite -> get_category_permastruct ();
if ( empty ( $catlink ) ) {
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$file = get_option ( 'home' ) . '/' ;
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$catlink = $file . '?cat=' . $category_id ;
} else {
$category = & get_category ( $category_id );
$category_nicename = $category -> category_nicename ;
if ( $parent = $category -> category_parent )
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$category_nicename = get_category_parents ( $parent , false , '/' , true ) . $category_nicename ;
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$catlink = str_replace ( '%category%' , $category_nicename , $catlink );
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$catlink = get_option ( 'home' ) . user_trailingslashit ( $catlink , 'category' );
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}
return apply_filters ( 'category_link' , $catlink , $category_id );
}
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function get_tag_link ( $tag_id ) {
global $wp_rewrite ;
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$catlink = $wp_rewrite -> get_tag_permastruct ();
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$category = & get_category ( $tag_id );
$category_nicename = $category -> category_nicename ;
if ( empty ( $catlink ) ) {
$file = get_option ( 'home' ) . '/' ;
$catlink = $file . '?tag=' . $category_nicename ;
} else {
$catlink = str_replace ( '%tag%' , $category_nicename , $catlink );
$catlink = get_option ( 'home' ) . user_trailingslashit ( $catlink , 'category' );
}
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return apply_filters ( 'tag_link' , $catlink , $tag_id );
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}
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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 ;
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if ( $parent -> category_parent && ( $parent -> category_parent != $parent -> cat_ID ) )
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$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 ;
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}
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function get_the_category ( $id = false ) {
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global $post , $category_cache , $blog_id ;
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$id = ( int ) $id ;
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if ( ! $id )
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$id = ( int ) $post -> ID ;
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if ( ! isset ( $category_cache [ $blog_id ][ $id ]) )
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update_post_category_cache ( $id );
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$categories = $category_cache [ $blog_id ][ $id ];
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if ( ! empty ( $categories ) )
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usort ( $categories , '_get_the_category_usort' );
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else
$categories = array ();
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return $categories ;
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}
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function _get_the_category_usort ( $a , $b ) {
return strcmp ( $a -> category_name , $b -> category_name );
}
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function get_the_category_by_ID ( $cat_ID ) {
$cat_ID = ( int ) $cat_ID ;
$category = & get_category ( $cat_ID );
return $category -> cat_name ;
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}
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function get_the_category_list ( $separator = '' , $parents = '' ) {
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global $wp_rewrite ;
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$categories = get_the_category ();
if ( empty ( $categories ))
return apply_filters ( 'the_category' , __ ( 'Uncategorized' ), $separator , $parents );
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$rel = ( is_object ( $wp_rewrite ) && $wp_rewrite -> using_permalinks () ) ? 'rel="category tag"' : 'rel="category"' ;
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$thelist = '' ;
if ( '' == $separator ) {
$thelist .= '<ul class="post-categories">' ;
foreach ( $categories as $category ) {
$thelist .= " \n \t <li> " ;
switch ( strtolower ( $parents ) ) {
case 'multiple' :
if ( $category -> category_parent )
$thelist .= get_category_parents ( $category -> category_parent , TRUE );
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$thelist .= '<a href="' . get_category_link ( $category -> cat_ID ) . '" title="' . sprintf ( __ ( " View all posts in %s " ), $category -> cat_name ) . '" ' . $rel . '>' . $category -> cat_name . '</a></li>' ;
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break ;
case 'single' :
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$thelist .= '<a href="' . get_category_link ( $category -> cat_ID ) . '" title="' . sprintf ( __ ( " View all posts in %s " ), $category -> cat_name ) . '" ' . $rel . '>' ;
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if ( $category -> category_parent )
$thelist .= get_category_parents ( $category -> category_parent , FALSE );
$thelist .= $category -> cat_name . '</a></li>' ;
break ;
case '' :
default :
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$thelist .= '<a href="' . get_category_link ( $category -> cat_ID ) . '" title="' . sprintf ( __ ( " View all posts in %s " ), $category -> cat_name ) . '" ' . $rel . '>' . $category -> cat_name . '</a></li>' ;
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}
}
$thelist .= '</ul>' ;
} else {
$i = 0 ;
foreach ( $categories as $category ) {
if ( 0 < $i )
$thelist .= $separator . ' ' ;
switch ( strtolower ( $parents ) ) {
case 'multiple' :
if ( $category -> category_parent )
$thelist .= get_category_parents ( $category -> category_parent , TRUE );
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$thelist .= '<a href="' . get_category_link ( $category -> cat_ID ) . '" title="' . sprintf ( __ ( " View all posts in %s " ), $category -> cat_name ) . '" ' . $rel . '>' . $category -> cat_name . '</a>' ;
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break ;
case 'single' :
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$thelist .= '<a href="' . get_category_link ( $category -> cat_ID ) . '" title="' . sprintf ( __ ( " View all posts in %s " ), $category -> cat_name ) . '" ' . $rel . '>' ;
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if ( $category -> category_parent )
$thelist .= get_category_parents ( $category -> category_parent , FALSE );
$thelist .= " $category->cat_name </a> " ;
break ;
case '' :
default :
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$thelist .= '<a href="' . get_category_link ( $category -> cat_ID ) . '" title="' . sprintf ( __ ( " View all posts in %s " ), $category -> cat_name ) . '" ' . $rel . '>' . $category -> cat_name . '</a>' ;
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}
++ $i ;
}
}
return apply_filters ( 'the_category' , $thelist , $separator , $parents );
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}
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function in_category ( $category ) { // Check if the current post is in the given category
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global $category_cache , $post , $blog_id ;
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if ( isset ( $category_cache [ $blog_id ][ $post -> ID ][ $category ] ) )
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return true ;
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else
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return false ;
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}
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function the_category ( $separator = '' , $parents = '' ) {
echo get_the_category_list ( $separator , $parents );
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}
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function get_the_tags ( $before , $sep , $after ) {
global $post ;
if ( ! $post )
return false ; // in-the-loop function
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$tags = wp_get_post_tags ( $post -> ID );
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if ( empty ( $tags ) )
return false ;
$return = $before ;
foreach ( $tags as $tag )
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$tag_links [] = '<a href="' . get_tag_link ( $tag -> cat_ID ) . '">' . $tag -> cat_name . '</a>' ;
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$tag_links = join ( $sep , $tag_links );
$tag_links = apply_filters ( 'the_tags' , $tag_links );
$return .= $tag_links ;
$return .= $after ;
return $return ;
}
function the_tags ( $before = 'Tags: ' , $sep = ', ' , $after = '' ) {
echo get_the_tags ( $before , $sep , $after );
}
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function category_description ( $category = 0 ) {
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global $cat ;
if ( ! $category )
$category = $cat ;
$category = & get_category ( $category );
return apply_filters ( 'category_description' , $category -> category_description , $category -> cat_ID );
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}
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function wp_dropdown_categories ( $args = '' ) {
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if ( is_array ( $args ) )
$r = & $args ;
else
parse_str ( $args , $r );
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$defaults = array ( 'show_option_all' => '' , 'show_option_none' => '' , 'orderby' => 'ID' ,
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'order' => 'ASC' , 'show_last_update' => 0 , 'show_count' => 0 ,
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'hide_empty' => 1 , 'child_of' => 0 , 'exclude' => '' , 'echo' => 1 ,
'selected' => 0 , 'hierarchical' => 0 , 'name' => 'cat' ,
'class' => 'postform' );
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$defaults [ 'selected' ] = ( is_category () ) ? get_query_var ( 'cat' ) : 0 ;
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$r = array_merge ( $defaults , $r );
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$r [ 'include_last_update_time' ] = $r [ 'show_last_update' ];
extract ( $r );
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$categories = get_categories ( $r );
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$output = '' ;
if ( ! empty ( $categories ) ) {
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$output = " <select name=' $name ' id=' $name ' class=' $class '> \n " ;
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if ( $show_option_all ) {
$show_option_all = apply_filters ( 'list_cats' , $show_option_all );
$output .= " \t <option value='0'> $show_option_all </option> \n " ;
}
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if ( $show_option_none ) {
$show_option_none = apply_filters ( 'list_cats' , $show_option_none );
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$output .= " \t <option value='-1'> $show_option_none </option> \n " ;
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}
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if ( $hierarchical )
$depth = 0 ; // Walk the full depth.
else
$depth = - 1 ; // Flat.
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$output .= walk_category_dropdown_tree ( $categories , $depth , $r );
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$output .= " </select> \n " ;
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}
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$output = apply_filters ( 'wp_dropdown_cats' , $output );
if ( $echo )
echo $output ;
return $output ;
}
function wp_list_categories ( $args = '' ) {
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if ( is_array ( $args ) )
$r = & $args ;
else
parse_str ( $args , $r );
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$defaults = array ( 'show_option_all' => '' , 'orderby' => 'name' ,
'order' => 'ASC' , 'show_last_update' => 0 , 'style' => 'list' ,
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'show_count' => 0 , 'hide_empty' => 1 , 'use_desc_for_title' => 1 ,
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'child_of' => 0 , 'feed' => '' , 'feed_image' => '' , 'exclude' => '' ,
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'hierarchical' => true , 'title_li' => __ ( 'Categories' ));
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$r = array_merge ( $defaults , $r );
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if ( ! isset ( $r [ 'pad_counts' ]) && $r [ 'show_count' ] && $r [ 'hierarchical' ] )
$r [ 'pad_counts' ] = true ;
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if ( isset ( $r [ 'show_date' ]) )
$r [ 'include_last_update_time' ] = $r [ 'show_date' ];
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extract ( $r );
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$categories = get_categories ( $r );
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$output = '' ;
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if ( $title_li && 'list' == $style )
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$output = '<li class="categories">' . $r [ 'title_li' ] . '<ul>' ;
if ( empty ( $categories ) ) {
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if ( 'list' == $style )
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$output .= '<li>' . __ ( " No categories " ) . '</li>' ;
else
$output .= __ ( " No categories " );
} else {
global $wp_query ;
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if ( is_category () )
$r [ 'current_category' ] = $wp_query -> get_queried_object_id ();
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if ( $hierarchical )
$depth = 0 ; // Walk the full depth.
else
$depth = - 1 ; // Flat.
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$output .= walk_category_tree ( $categories , $depth , $r );
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}
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if ( $title_li && 'list' == $style )
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$output .= '</ul></li>' ;
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echo apply_filters ( 'wp_list_categories' , $output );
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}
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//
// Helper functions
//
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function walk_category_tree () {
$walker = new Walker_Category ;
$args = func_get_args ();
return call_user_func_array ( array ( & $walker , 'walk' ), $args );
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}
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function walk_category_dropdown_tree () {
$walker = new Walker_CategoryDropdown ;
$args = func_get_args ();
return call_user_func_array ( array ( & $walker , 'walk' ), $args );
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}
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?>