wordpress-seo / src / helpers / language-helper.php

language-helper.php in Yoast SEO – Advanced SEO with real-time guidance and built-in AI 18.1, at src/helpers/language-helper.php

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1	<?php
2
3	namespace Yoast\WP\SEO\Helpers;
4
5	use WPSEO_Language_Utils;
6	use Yoast\WP\SEO\Config\Researcher_Languages;
7
8	/**
9	* A helper object for language features.
10	*/
11	class Language_Helper {
12
13	/**
14	* Checks whether word form recognition is active for the used language.
15	*
16	* @param string $language The used language.
17	*
18	* @return bool Whether word form recognition is active for the used language.
19	*/
20	public function is_word_form_recognition_active( $language ) {
21	$supported_languages = [ 'de', 'en', 'es', 'fr', 'it', 'nl', 'ru', 'id', 'pt', 'pl', 'ar', 'sv', 'he', 'hu', 'nb', 'tr', 'cs', 'sk', 'el', 'ja' ];
22
23	return \in_array( $language, $supported_languages, true );
24	}
25
26	/**
27	* Checks whether the given language has function word support.
28	* (E.g. function words are used or filtered out for this language when doing some SEO and readability assessments).
29	*
30	* @param string $language The language to check.
31	*
32	* @return bool Whether the language has function word support.
33	*/
34	public function has_function_word_support( $language ) {
35	$supported_languages = [ 'en', 'de', 'nl', 'fr', 'es', 'it', 'pt', 'ru', 'pl', 'sv', 'id', 'he', 'ar', 'hu', 'nb', 'tr', 'cs', 'sk', 'fa', 'el', 'ja' ];
36
37	return \in_array( $language, $supported_languages, true );
38	}
39
40	/**
41	* Checks whether we have a specific researcher for the current locale and returns that language.
42	* If there is no researcher for the current locale, returns default as the researcher.
43	*
44	* @return string The language to use to select a researcher.
45	*/
46	public function get_researcher_language() {
47	$researcher_language = WPSEO_Language_Utils::get_language( \get_locale() );
48	$supported_languages = Researcher_Languages::SUPPORTED_LANGUAGES;
49
50	if ( ! \in_array( $researcher_language, $supported_languages, true ) ) {
51	$researcher_language = 'default';
52	}
53	return $researcher_language;
54	}
55	}
56