Plugin_Upgrader::install( string $package, array $args = array() ): bool|WP_Error

In this article

Install a plugin package.

Parameters

$packagestringrequired
The full local path or URI of the package.
$argsarrayoptional
Other arguments for installing a plugin package.
  • clear_update_cache bool
    Whether to clear the plugin updates cache if successful.
    Default true.

Default:array()

Return

bool|WP_Error True if the installation was successful, false or a WP_Error otherwise.

Source

public function install( $package, $args = array() ) {	$defaults = array(	'clear_update_cache' => true,	'overwrite_package' => false, // Do not overwrite files.	);	$parsed_args = wp_parse_args( $args, $defaults );	$this->init();	$this->install_strings();	add_filter( 'upgrader_source_selection', array( $this, 'check_package' ) );	if ( $parsed_args['clear_update_cache'] ) {	// Clear cache so wp_update_plugins() knows about the new plugin.	add_action( 'upgrader_process_complete', 'wp_clean_plugins_cache', 9, 0 );	}	$this->run(	array(	'package' => $package,	'destination' => WP_PLUGIN_DIR,	'clear_destination' => $parsed_args['overwrite_package'],	'clear_working' => true,	'hook_extra' => array(	'type' => 'plugin',	'action' => 'install',	),	)	);	remove_action( 'upgrader_process_complete', 'wp_clean_plugins_cache', 9 );	remove_filter( 'upgrader_source_selection', array( $this, 'check_package' ) );	if ( ! $this->result || is_wp_error( $this->result ) ) {	return $this->result;	}	// Force refresh of plugin update information.	wp_clean_plugins_cache( $parsed_args['clear_update_cache'] );	if ( $parsed_args['overwrite_package'] ) {	/** * Fires when the upgrader has successfully overwritten a currently installed * plugin or theme with an uploaded zip package. * * @since 5.5.0 * * @param string $package The package file. * @param array $data The new plugin or theme data. * @param string $package_type The package type ('plugin' or 'theme'). */	do_action( 'upgrader_overwrote_package', $package, $this->new_plugin_data, 'plugin' );	}	return true; } 

Hooks

do_action( ‘upgrader_overwrote_package’, string $package, array $data, string $package_type )

Fires when the upgrader has successfully overwritten a currently installed plugin or theme with an uploaded zip package.

Changelog

VersionDescription
3.7.0The $args parameter was added, making clearing the plugin update cache optional.
2.8.0Introduced.

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