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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.
This hook occurs 2 times in this file.
| Line | Code |
|---|---|
| 692 | |
| 693 | // Update the attachment |
| 694 | wp_insert_attachment($object, $cropped); |
| 695 | wp_update_attachment_metadata( $_POST['attachment_id'], wp_generate_attachment_metadata( $_POST['attachment_id'], $cropped ) ); |
| 696 | |
| 697 | set_theme_mod('header_image', $url); |
| 698 | |
| 699 | // cleanup |
| 700 | $medium = str_replace(basename($original), 'midsize-'.basename($original), $original); |
| 701 | @unlink( apply_filters( 'wp_delete_file', $medium ) ); |
| 702 | @unlink( apply_filters( 'wp_delete_file', $original ) ); |
| 703 | |
| 704 | return $this->finished(); |
| 705 | } |
| 706 | |
| 707 | /** |
| 708 | * Display last step of custom header image page. |
| 709 | * |
| 710 | * @since 2.1.0 |
| 711 | */ |