Plugin_Upgrader::deactivate_plugin_before_upgrade( bool|WP_Error $return, array $plugin )

Source

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

public function deactivate_plugin_before_upgrade( $return, $plugin ) {

		if ( is_wp_error( $return ) ) { // Bypass.
			return $return;
		}

		// When in cron (background updates) don't deactivate the plugin, as we require a browser to reactivate it.
		if ( wp_doing_cron() ) {
			return $return;
		}

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

		if ( is_plugin_active( $plugin ) ) {
			// Deactivate the plugin silently, Prevent deactivation hooks from running.
			deactivate_plugins( $plugin, true );
		}

		return $return;
	}