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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 |
|---|---|
| 678 | |
| 679 | // Update the attachment |
| 680 | wp_insert_attachment($object, $cropped); |
| 681 | wp_update_attachment_metadata( $_POST['attachment_id'], wp_generate_attachment_metadata( $_POST['attachment_id'], $cropped ) ); |
| 682 | |
| 683 | set_theme_mod('header_image', $url); |
| 684 | |
| 685 | // cleanup |
| 686 | $medium = str_replace(basename($original), 'midsize-'.basename($original), $original); |
| 687 | @unlink( apply_filters( 'wp_delete_file', $medium ) ); |
| 688 | @unlink( apply_filters( 'wp_delete_file', $original ) ); |
| 689 | |
| 690 | return $this->finished(); |
| 691 | } |
| 692 | |
| 693 | /** |
| 694 | * Display last step of custom header image page. |
| 695 | * |
| 696 | * @since 2.1.0 |
| 697 | */ |