File: wp-admin/includes/class-plugin-upgrader.php. View all references

public function delete_old_plugin( $removed, $local_destination, $remote_destination, $plugin ) {
	global $wp_filesystem;

	if ( is_wp_error( $removed ) ) {
		return $removed; // Pass errors through.
	}

	$plugin = isset( $plugin['plugin'] ) ? $plugin['plugin'] : '';
	if ( empty( $plugin ) ) {
		return new WP_Error( 'bad_request', $this->strings['bad_request'] );
	}

	$plugins_dir     = $wp_filesystem->wp_plugins_dir();
	$this_plugin_dir = trailingslashit( dirname( $plugins_dir . $plugin ) );

	if ( ! $wp_filesystem->exists( $this_plugin_dir ) ) { // If it's already vanished.
		return $removed;
	}

	/*
	 * If plugin is in its own directory, recursively delete the directory.
	 * Base check on if plugin includes directory separator AND that it's not the root plugin folder.
	 */
	if ( strpos( $plugin, '/' ) && $this_plugin_dir !== $plugins_dir ) {
		$deleted = $wp_filesystem->delete( $this_plugin_dir, true );
	} else {
		$deleted = $wp_filesystem->delete( $plugins_dir . $plugin );
	}

	if ( ! $deleted ) {
		return new WP_Error( 'remove_old_failed', $this->strings['remove_old_failed'] );
	}

	return true;
}

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