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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )
apply_filters( "hook_name", "what_to_filter" )
.Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
This hook occurs 2 times in this file.
Line | Code |
---|---|
107 | if ( is_wp_error( $category ) ) |
108 | return $category; |
109 | return $category->name; |
110 | } |
111 |
|
112 | function get_the_category_list($separator = '', $parents='') { |
113 | global $wp_rewrite; |
114 | $categories = get_the_category(); |
115 | if (empty($categories)) |
116 | return apply_filters('the_category', __('Uncategorized'), $separator, $parents); |
117 |
|
118 | $rel = ( is_object($wp_rewrite) && $wp_rewrite->using_permalinks() ) ? 'rel="category tag"' : 'rel="category"'; |
119 |
|
120 | $thelist = ''; |
121 | if ( '' == $separator ) { |
122 | $thelist .= '<ul class="post-categories">'; |
123 | foreach ( $categories as $category ) { |
124 | $thelist .= "\n\t<li>"; |
125 | switch ( strtolower($parents) ) { |
Line | Code |
158 | $thelist .= "$category->cat_name</a>"; |
159 | break; |
160 | case '': |
161 | default: |
162 | $thelist .= '<a href="' . get_category_link($category->term_id) . '" title="' . sprintf(__("View all posts in %s"), $category->name) . '" ' . $rel . '>' . $category->name.'</a>'; |
163 | } |
164 | ++$i; |
165 | } |
166 | } |
167 | return apply_filters('the_category', $thelist, $separator, $parents); |
168 | } |
169 |
|
170 | function in_category( $category ) { // Check if the current post is in the given category |
171 | global $post, $blog_id; |
172 |
|
173 | $categories = get_object_term_cache($post->ID, 'category'); |
174 | if ( false === $categories ) |
175 | $categories = wp_get_object_terms($post->ID, 'category'); |
176 | if(array_key_exists($category, $categories)) |