Theme_Upgrader::bulk_upgrade( string[] $themes, array $args = array() ): array[]|false

In this article

Upgrades several themes at once.

Parameters

$themesstring[]required
Array of the theme slugs.
$argsarrayoptional
Other arguments for upgrading several themes at once.
  • clear_update_cache bool
    Whether to clear the update cache if successful.
    Default true.

Default:array()

Return

array[]|false An array of results, or false if unable to connect to the filesystem.

Source

public function bulk_upgrade( $themes, $args = array() ) {
	$defaults    = array(
		'clear_update_cache' => true,
	);
	$parsed_args = wp_parse_args( $args, $defaults );

	$this->init();
	$this->bulk = true;
	$this->upgrade_strings();

	$current = get_site_transient( 'update_themes' );

	add_filter( 'upgrader_pre_install', array( $this, 'current_before' ), 10, 2 );
	add_filter( 'upgrader_post_install', array( $this, 'current_after' ), 10, 2 );
	add_filter( 'upgrader_clear_destination', array( $this, 'delete_old_theme' ), 10, 4 );

	$this->skin->header();

	// Connect to the filesystem first.
	$res = $this->fs_connect( array( WP_CONTENT_DIR ) );
	if ( ! $res ) {
		$this->skin->footer();
		return false;
	}

	$this->skin->bulk_header();

	/*
	 * Only start maintenance mode if:
	 * - running Multisite and there are one or more themes specified, OR
	 * - a theme with an update available is currently in use.
	 * @todo For multisite, maintenance mode should only kick in for individual sites if at all possible.
	 */
	$maintenance = ( is_multisite() && ! empty( $themes ) );
	foreach ( $themes as $theme ) {
		$maintenance = $maintenance || get_stylesheet() === $theme || get_template() === $theme;
	}
	if ( $maintenance ) {
		$this->maintenance_mode( true );
	}

	$results = array();

	$this->update_count   = count( $themes );
	$this->update_current = 0;
	foreach ( $themes as $theme ) {
		++$this->update_current;

		$this->skin->theme_info = $this->theme_info( $theme );

		if ( ! isset( $current->response[ $theme ] ) ) {
			$this->skin->set_result( true );
			$this->skin->before();
			$this->skin->feedback( 'up_to_date' );
			$this->skin->after();
			$results[ $theme ] = true;
			continue;
		}

		// Get the URL to the zip file.
		$r = $current->response[ $theme ];

		$result = $this->run(
			array(
				'package'           => $r['package'],
				'destination'       => get_theme_root( $theme ),
				'clear_destination' => true,
				'clear_working'     => true,
				'is_multi'          => true,
				'hook_extra'        => array(
					'theme'       => $theme,
					'temp_backup' => array(
						'slug' => $theme,
						'src'  => get_theme_root( $theme ),
						'dir'  => 'themes',
					),
				),
			)
		);

		$results[ $theme ] = $result;

		// Prevent credentials auth screen from displaying multiple times.
		if ( false === $result ) {
			break;
		}
	} // End foreach $themes.

	$this->maintenance_mode( false );

	// Refresh the Theme Update information.
	wp_clean_themes_cache( $parsed_args['clear_update_cache'] );

	/** This action is documented in wp-admin/includes/class-wp-upgrader.php */
	do_action(
		'upgrader_process_complete',
		$this,
		array(
			'action' => 'update',
			'type'   => 'theme',
			'bulk'   => true,
			'themes' => $themes,
		)
	);

	$this->skin->bulk_footer();

	$this->skin->footer();

	// Cleanup our hooks, in case something else does an upgrade on this connection.
	remove_filter( 'upgrader_pre_install', array( $this, 'current_before' ) );
	remove_filter( 'upgrader_post_install', array( $this, 'current_after' ) );
	remove_filter( 'upgrader_clear_destination', array( $this, 'delete_old_theme' ) );

	/*
	 * Ensure any future auto-update failures trigger a failure email by removing
	 * the last failure notification from the list when themes update successfully.
	 */
	$past_failure_emails = get_option( 'auto_plugin_theme_update_emails', array() );

	foreach ( $results as $theme => $result ) {
		// Maintain last failure notification when themes failed to update manually.
		if ( ! $result || is_wp_error( $result ) || ! isset( $past_failure_emails[ $theme ] ) ) {
			continue;
		}

		unset( $past_failure_emails[ $theme ] );
	}

	update_option( 'auto_plugin_theme_update_emails', $past_failure_emails );

	return $results;
}

Hooks

do_action( ‘upgrader_process_complete’, WP_Upgrader $upgrader, array $hook_extra )

Fires when the upgrader process is complete.

Changelog

VersionDescription
3.7.0The $args parameter was added, making clearing the update cache optional.
3.0.0Introduced.

User Contributed Notes

You must log in before being able to contribute a note or feedback.