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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 |
|---|---|
| 209 | 'show_option_all' => __( 'View all categories' ), |
| 210 | 'hide_empty' => 0, |
| 211 | 'hierarchical' => 1, |
| 212 | 'show_count' => 0, |
| 213 | 'orderby' => 'name', |
| 214 | 'selected' => $cat |
| 215 | ); |
| 216 | wp_dropdown_categories( $dropdown_options ); |
| 217 | } |
| 218 | do_action( 'restrict_manage_posts' ); |
| 219 | submit_button( __( 'Filter' ), 'button', false, false, array( 'id' => 'post-query-submit' ) ); |
| 220 | } |
| 221 | |
| 222 | if ( $this->is_trash && current_user_can( get_post_type_object( $this->screen->post_type )->cap->edit_others_posts ) ) { |
| 223 | submit_button( __( 'Empty Trash' ), 'apply', 'delete_all', false ); |
| 224 | } |
| 225 | ?> |
| 226 | </div> |
| 227 | <?php |