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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.
| Line | Code |
|---|---|
| 153 | if ( $post->post_author && !in_array($post->post_author, $authors) ) |
| 154 | $authors[] = $post->post_author; |
| 155 | if ( ( $authors && count( $authors ) > 1 ) || is_super_admin() ) |
| 156 | add_meta_box('authordiv', __('Author'), 'post_author_meta_box', $post_type, 'normal', 'core'); |
| 157 | } |
| 158 | |
| 159 | if ( post_type_supports($post_type, 'revisions') && 0 < $post_ID && wp_get_post_revisions( $post_ID ) ) |
| 160 | add_meta_box('revisionsdiv', __('Revisions'), 'post_revisions_meta_box', $post_type, 'normal', 'core'); |
| 161 | |
| 162 | do_action('add_meta_boxes', $post_type, $post); |
| 163 | do_action('add_meta_boxes_' . $post_type, $post); |
| 164 | |
| 165 | do_action('do_meta_boxes', $post_type, 'normal', $post); |
| 166 | do_action('do_meta_boxes', $post_type, 'advanced', $post); |
| 167 | do_action('do_meta_boxes', $post_type, 'side', $post); |
| 168 | |
| 169 | if ( 'post' == $post_type ) { |
| 170 | add_contextual_help($current_screen, |
| 171 | '<p>' . __('The title field and the big Post Editing Area are fixed in place, but you can reposition all the other boxes that allow you to add metadata to your post using drag and drop, and can minimize or expand them by clicking the title bar of the box. You can also hide any of the boxes by using the Screen Options tab, where you can also choose a 1- or 2-column layout for this screen.') . '</p>' . |