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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 |
---|---|
167 | $this->set_hierarchical_display( |
168 | is_post_type_hierarchical( $this->screen->post_type ) |
169 | && 'menu_order title' === $wp_query->query['orderby'] |
170 | ); |
171 |
|
172 | $post_type = $this->screen->post_type; |
173 | $per_page = $this->get_items_per_page( 'edit_' . $post_type . '_per_page' ); |
174 |
|
175 | /** This filter is documented in wp-admin/includes/post.php */ |
176 | $per_page = apply_filters( 'edit_posts_per_page', $per_page, $post_type ); |
177 |
|
178 | if ( $this->hierarchical_display ) { |
179 | $total_items = $wp_query->post_count; |
180 | } elseif ( $wp_query->found_posts || $this->get_pagenum() === 1 ) { |
181 | $total_items = $wp_query->found_posts; |
182 | } else { |
183 | $post_counts = (array) wp_count_posts( $post_type, 'readable' ); |
184 |
|
185 | if ( isset( $_REQUEST['post_status'] ) && in_array( $_REQUEST['post_status'], $avail_post_stati, true ) ) { |