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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 3 times in this file.
| Line | Code |
|---|---|
| 584 | $data = $backup_sizes['full-orig']; |
| 585 | |
| 586 | if ( $parts['basename'] != $data['file'] ) { |
| 587 | if ( defined('IMAGE_EDIT_OVERWRITE') && IMAGE_EDIT_OVERWRITE ) { |
| 588 | |
| 589 | // Delete only if it's edited image. |
| 590 | if ( preg_match('/-e[0-9]{13}\./', $parts['basename']) ) { |
| 591 | |
| 592 | /** This filter is documented in wp-admin/custom-header.php */ |
| 593 | $delpath = apply_filters( 'wp_delete_file', $file ); |
| 594 | @unlink($delpath); |
| 595 | } |
| 596 | } elseif ( isset( $meta['width'], $meta['height'] ) ) { |
| 597 | $backup_sizes["full-$suffix"] = array('width' => $meta['width'], 'height' => $meta['height'], 'file' => $parts['basename']); |
| 598 | } |
| 599 | } |
| 600 | |
| 601 | $restored_file = path_join($parts['dirname'], $data['file']); |
| 602 | $restored = update_attached_file($post_id, $restored_file); |
| Line | Code |
| 609 | foreach ( $default_sizes as $default_size ) { |
| 610 | if ( isset($backup_sizes["$default_size-orig"]) ) { |
| 611 | $data = $backup_sizes["$default_size-orig"]; |
| 612 | if ( isset($meta['sizes'][$default_size]) && $meta['sizes'][$default_size]['file'] != $data['file'] ) { |
| 613 | if ( defined('IMAGE_EDIT_OVERWRITE') && IMAGE_EDIT_OVERWRITE ) { |
| 614 | |
| 615 | // Delete only if it's edited image |
| 616 | if ( preg_match('/-e[0-9]{13}-/', $meta['sizes'][$default_size]['file']) ) { |
| 617 | /** This filter is documented in wp-admin/custom-header.php */ |
| 618 | $delpath = apply_filters( 'wp_delete_file', path_join($parts['dirname'], $meta['sizes'][$default_size]['file']) ); |
| 619 | @unlink($delpath); |
| 620 | } |
| 621 | } else { |
| 622 | $backup_sizes["$default_size-{$suffix}"] = $meta['sizes'][$default_size]; |
| 623 | } |
| 624 | } |
| 625 | |
| 626 | $meta['sizes'][$default_size] = $data; |
| 627 | } else { |
| Line | Code |
| 823 | } |
| 824 | } |
| 825 | } else { |
| 826 | $delete = true; |
| 827 | } |
| 828 | |
| 829 | if ( $delete ) { |
| 830 | |
| 831 | /** This filter is documented in wp-admin/custom-header.php */ |
| 832 | $delpath = apply_filters( 'wp_delete_file', $new_path ); |
| 833 | @unlink( $delpath ); |
| 834 | } |
| 835 | |
| 836 | $return->msg = esc_js( __('Image saved') ); |
| 837 | return $return; |
| 838 | } |
| 839 | |