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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 |
|---|---|
| 1230 | * |
| 1231 | * @since 2.1.0 |
| 1232 | * @since 4.4.0 `$parsed_args` and `$pages` added as arguments. |
| 1233 | * |
| 1234 | * @param string $output HTML output for dropdown list of pages. |
| 1235 | * @param array $parsed_args The parsed arguments array. See wp_dropdown_pages() |
| 1236 | * for information on accepted arguments. |
| 1237 | * @param WP_Post[] $pages Array of the page objects. |
| 1238 | */ |
| 1239 | $html = apply_filters( 'wp_dropdown_pages', $output, $parsed_args, $pages ); |
| 1240 | |
| 1241 | if ( $parsed_args['echo'] ) { |
| 1242 | echo $html; |
| 1243 | } |
| 1244 | |
| 1245 | return $html; |
| 1246 | } |
| 1247 | |
| 1248 | /** |