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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 |
|---|---|
| 4745 | do_action( 'deleted_post', $post_id ); |
| 4746 | |
| 4747 | $uploadpath = wp_upload_dir(); |
| 4748 | |
| 4749 | if ( ! empty($meta['thumb']) ) { |
| 4750 | // Don't delete the thumb if another attachment uses it. |
| 4751 | if (! $wpdb->get_row( $wpdb->prepare( "SELECT meta_id FROM $wpdb->postmeta WHERE meta_key = '_wp_attachment_metadata' AND meta_value LIKE %s AND post_id <> %d", '%' . $wpdb->esc_like( $meta['thumb'] ) . '%', $post_id)) ) { |
| 4752 | $thumbfile = str_replace(basename($file), $meta['thumb'], $file); |
| 4753 | /** This filter is documented in wp-includes/functions.php */ |
| 4754 | $thumbfile = apply_filters( 'wp_delete_file', $thumbfile ); |
| 4755 | @ unlink( path_join($uploadpath['basedir'], $thumbfile) ); |
| 4756 | } |
| 4757 | } |
| 4758 | |
| 4759 | // Remove intermediate and backup images if there are any. |
| 4760 | if ( isset( $meta['sizes'] ) && is_array( $meta['sizes'] ) ) { |
| 4761 | foreach ( $meta['sizes'] as $size => $sizeinfo ) { |
| 4762 | $intermediate_file = str_replace( basename( $file ), $sizeinfo['file'], $file ); |
| 4763 | /** This filter is documented in wp-includes/functions.php */ |
| 4764 | $intermediate_file = apply_filters( 'wp_delete_file', $intermediate_file ); |
| 4765 | @ unlink( path_join( $uploadpath['basedir'], $intermediate_file ) ); |
| 4766 | } |
| 4767 | } |
| 4768 | |
| 4769 | if ( is_array($backup_sizes) ) { |
| 4770 | foreach ( $backup_sizes as $size ) { |
| 4771 | $del_file = path_join( dirname($meta['file']), $size['file'] ); |
| 4772 | /** This filter is documented in wp-includes/functions.php */ |
| 4773 | $del_file = apply_filters( 'wp_delete_file', $del_file ); |
| 4774 | @ unlink( path_join($uploadpath['basedir'], $del_file) ); |
| 4775 | } |
| 4776 | } |
| 4777 | |
| 4778 | wp_delete_file( $file ); |
| 4779 | |
| 4780 | clean_post_cache( $post ); |
| 4781 | |
| 4782 | return $post; |