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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.
| Line | Code |
|---|---|
| 208 | return new WP_Error('folder_exists', $this->strings['folder_exists'], $remote_destination ); |
| 209 | } else if ( $clear_destination ) { |
| 210 | //We're going to clear the destination if theres something there |
| 211 | $this->skin->feedback('remove_old'); |
| 212 | |
| 213 | $removed = true; |
| 214 | if ( $wp_filesystem->exists($remote_destination) ) |
| 215 | $removed = $wp_filesystem->delete($remote_destination, true); |
| 216 | |
| 217 | $removed = apply_filters('upgrader_clear_destination', $removed, $local_destination, $remote_destination, $hook_extra); |
| 218 | |
| 219 | if ( is_wp_error($removed) ) |
| 220 | return $removed; |
| 221 | else if ( ! $removed ) |
| 222 | return new WP_Error('remove_old_failed', $this->strings['remove_old_failed']); |
| 223 | } |
| 224 | |
| 225 | //Create destination if needed |
| 226 | if ( !$wp_filesystem->exists($remote_destination) ) |