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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 |
|---|---|
| 1478 | * @since 2.9.0 |
| 1479 | * @since 4.4.0 Added `$post` parameter. |
| 1480 | * |
| 1481 | * @param string $return Sample permalink HTML markup. |
| 1482 | * @param int $post_id Post ID. |
| 1483 | * @param string $new_title New sample permalink title. |
| 1484 | * @param string $new_slug New sample permalink slug. |
| 1485 | * @param WP_Post $post Post object. |
| 1486 | */ |
| 1487 | $return = apply_filters( 'get_sample_permalink_html', $return, $post->ID, $new_title, $new_slug, $post ); |
| 1488 | |
| 1489 | return $return; |
| 1490 | } |
| 1491 | |
| 1492 | /** |
| 1493 | * Output HTML for the post thumbnail meta-box. |
| 1494 | * |
| 1495 | * @since 2.9.0 |
| 1496 | * |