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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 |
|---|---|
| 431 | |
| 432 | // Update the attachment |
| 433 | wp_insert_attachment($object, $cropped); |
| 434 | wp_update_attachment_metadata( $_POST['attachment_id'], wp_generate_attachment_metadata( $_POST['attachment_id'], $cropped ) ); |
| 435 | |
| 436 | set_theme_mod('header_image', $url); |
| 437 | |
| 438 | // cleanup |
| 439 | $medium = str_replace(basename($original), 'midsize-'.basename($original), $original); |
| 440 | @unlink( apply_filters( 'wp_delete_file', $medium ) ); |
| 441 | @unlink( apply_filters( 'wp_delete_file', $original ) ); |
| 442 | |
| 443 | return $this->finished(); |
| 444 | } |
| 445 | |
| 446 | /** |
| 447 | * Display last step of custom header image page. |
| 448 | * |
| 449 | * @since unknown |
| 450 | */ |