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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 |
|---|---|
| 329 | <option value=""><?php _e( 'All comment types' ); ?></option> |
| 330 | <?php |
| 331 | /** |
| 332 | * Filters the comment types dropdown menu. |
| 333 | * |
| 334 | * @since 2.7.0 |
| 335 | * |
| 336 | * @param array $comment_types An array of comment types. Accepts 'Comments', 'Pings'. |
| 337 | */ |
| 338 | $comment_types = apply_filters( 'admin_comment_types_dropdown', array( |
| 339 | 'comment' => __( 'Comments' ), |
| 340 | 'pings' => __( 'Pings' ), |
| 341 | ) ); |
| 342 | |
| 343 | foreach ( $comment_types as $type => $label ) |
| 344 | echo "\t" . '<option value="' . esc_attr( $type ) . '"' . selected( $comment_type, $type, false ) . ">$label</option>\n"; |
| 345 | ?> |
| 346 | </select> |
| 347 | <?php |