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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 |
|---|---|
| 1238 | * Filter the sample permalink HTML markup. |
| 1239 | * |
| 1240 | * @since 2.9.0 |
| 1241 | * |
| 1242 | * @param string $return Sample permalink HTML markup. |
| 1243 | * @param int|WP_Post $id Post object or ID. |
| 1244 | * @param string $new_title New sample permalink title. |
| 1245 | * @param string $new_slug New sample permalink slug. |
| 1246 | */ |
| 1247 | $return = apply_filters( 'get_sample_permalink_html', $return, $id, $new_title, $new_slug ); |
| 1248 | |
| 1249 | return $return; |
| 1250 | } |
| 1251 | |
| 1252 | /** |
| 1253 | * Output HTML for the post thumbnail meta-box. |
| 1254 | * |
| 1255 | * @since 2.9.0 |
| 1256 | * |