Edit file File name : language-helper.php Content :<?php namespace Yoast\WP\SEO\Helpers\Schema; /** * Class Language_Helper. */ class Language_Helper { /** * Adds the `inLanguage` property to a Schema piece. * * Must use one of the language codes from the IETF BCP 47 standard. The * language tag syntax is made of one or more subtags separated by a hyphen * e.g. "en", "en-US", "zh-Hant-CN". * * @param array $data The Schema piece data. * * @return array The Schema piece data with added language property */ public function add_piece_language( $data ) { /** * Filter: 'wpseo_schema_piece_language' - Allow changing the Schema piece language. * * @param string $type The Schema piece language. * @param array $data The Schema piece data. */ $data['inLanguage'] = \apply_filters( 'wpseo_schema_piece_language', \get_bloginfo( 'language' ), $data ); return $data; } } Save