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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 4 times in this file.
| Line | Code |
|---|---|
| 4107 | $wpdb->delete( $wpdb->posts, array( 'ID' => $post_id ) ); |
| 4108 | do_action( 'deleted_post', $post_id ); |
| 4109 | |
| 4110 | $uploadpath = wp_upload_dir(); |
| 4111 | |
| 4112 | if ( ! empty($meta['thumb']) ) { |
| 4113 | // Don't delete the thumb if another attachment uses it |
| 4114 | 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", '%' . $meta['thumb'] . '%', $post_id)) ) { |
| 4115 | $thumbfile = str_replace(basename($file), $meta['thumb'], $file); |
| 4116 | $thumbfile = apply_filters('wp_delete_file', $thumbfile); |
| 4117 | @ unlink( path_join($uploadpath['basedir'], $thumbfile) ); |
| 4118 | } |
| 4119 | } |
| 4120 | |
| 4121 | // remove intermediate and backup images if there are any |
| 4122 | foreach ( $intermediate_sizes as $intermediate ) { |
| 4123 | $intermediate_file = apply_filters( 'wp_delete_file', $intermediate['path'] ); |
| 4124 | @ unlink( path_join($uploadpath['basedir'], $intermediate_file) ); |
| 4125 | } |
| 4126 | |
| 4127 | if ( is_array($backup_sizes) ) { |
| 4128 | foreach ( $backup_sizes as $size ) { |
| 4129 | $del_file = path_join( dirname($meta['file']), $size['file'] ); |
| 4130 | $del_file = apply_filters('wp_delete_file', $del_file); |
| 4131 | @ unlink( path_join($uploadpath['basedir'], $del_file) ); |
| 4132 | } |
| 4133 | } |
| 4134 | |
| 4135 | $file = apply_filters('wp_delete_file', $file); |
| 4136 | |
| 4137 | if ( ! empty($file) ) |
| 4138 | @ unlink($file); |
| 4139 | |
| 4140 | clean_post_cache( $post ); |
| 4141 | |
| 4142 | return $post; |
| 4143 | } |
| 4144 | |