polylang / include / api.php

api.php in Polylang 1.3, at include/api.php

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1	<?php
2
3	/*
4	* template tag: displays the language switcher
5	*
6	* list of parameters accepted in $args:
7	*
8	* dropdown => displays a dropdown if set to 1, defaults to 0
9	* echo => echoes the the switcher if set to 1 (default)
10	* hide_if_empty => hides languages with no posts (or pages) if set to 1 (default)
11	* show_flags => shows flags if set to 1, defaults to 0
12	* show_names => shows languages names if set to 1 (default)
13	* display_names_as => wether to display the language name or code. valid options are 'slug' and 'name'
14	* force_home => forces linking to the home page is set to 1, defaults to 0
15	* hide_if_no_translation => hides the link if there is no translation if set to 1, defaults to 0
16	* hide_current => hides the current language if set to 1, defaults to 0
17	* post_id => if not null, link to translations of post defined by post_id, defaults to null
18	* raw => set this to true to build your own custom language switcher, defaults to 0
19	*
20	* @since 0.5
21	*
22	* @param array $args optional
23	* @return null\|string\|array null if displaying, array if raw is requested, string otherwise
24	*/
25	function pll_the_languages($args = '') {
26	global $polylang;
27	if ($polylang instanceof PLL_Frontend && !empty($polylang->links)) {
28	$switcher = new PLL_Switcher;
29	return $switcher->the_languages($polylang->links, $args);
30	}
31	return '';
32	}
33
34	/*
35	* returns the current language
36	*
37	* @since 0.8.1
38	*
39	* @param string $field optional the language field to return 'name', 'locale', defaults to 'slug'
40	* @return string the requested field for the current language
41	*/
42	function pll_current_language($field = 'slug') {
43	global $polylang;
44	return isset($polylang->curlang->$field) ? $polylang->curlang->$field : false;
45	}
46
47	/*
48	* returns the default language
49	*
50	* @since 1.0
51	*
52	* @param string $field optional the language field to return 'name', 'locale', defaults to 'slug'
53	* @return string the requested field for the default language
54	*/
55	function pll_default_language($field = 'slug') {
56	global $polylang;
57	return isset($polylang->options['default_lang']) && ($lang = $polylang->model->get_language($polylang->options['default_lang'])) && isset($lang->$field) ? $lang->$field : false;
58	}
59
60	/*
61	* among the post and its translations, returns the id of the post which is in the language represented by $slug
62	*
63	* @since 0.5
64	*
65	* @param int $post_id post id
66	* @param string $slug optional language code, defaults to current language
67	* @return int post id of the translation if exists
68	*/
69	function pll_get_post($post_id, $slug = '') {
70	global $polylang;
71	return isset($polylang) && ($slug = $slug ? $slug : pll_current_language()) ? $polylang->model->get_post($post_id, $slug) : null;
72	}
73
74	/*
75	* among the term and its translations, returns the id of the term which is in the language represented by $slug
76	*
77	* @since 0.5
78	*
79	* @param int $term_id term id
80	* @param string $slug optional language code, defaults to current language
81	* @return int term id of the translation if exists
82	*/
83	function pll_get_term($term_id, $slug = '') {
84	global $polylang;
85	return isset($polylang) && ($slug = $slug ? $slug : pll_current_language()) ? $polylang->model->get_term($term_id, $slug) : null;
86	}
87
88	/*
89	* returns the home url in the current language
90	*
91	* @since 0.8
92	*
93	* @param string $lang language code (optional on frontend)
94	* @return string
95	*/
96	function pll_home_url($lang = '') {
97	global $polylang;
98
99	if (empty($lang))
100	$lang = pll_current_language();
101
102	return isset($polylang) && !empty($polylang->links) && !empty($lang) ? $polylang->links->get_home_url($lang) : home_url('/');
103	}
104
105	/*
106	* registers a string for translation in the "strings translation" panel
107	*
108	* @since 0.6
109	*
110	* @param string $name a unique name for the string
111	* @param string $string the string to register
112	* @param string $context optional the group in which the string is registered, defaults to 'polylang'
113	* @param bool $multiline optional wether the string table should display a multiline textarea or a single line input, defaults to single line
114	*/
115	function pll_register_string($name, $string, $context = 'polylang', $multiline = false) {
116	global $polylang;
117	if ($polylang instanceof PLL_Admin && !empty($polylang->settings_page))
118	$polylang->settings_page->register_string($name, $string, $context, $multiline);
119	}
120
121	/*
122	* translates a string (previously registered with pll_register_string)
123	*
124	* @since 0.6
125	*
126	* @param string $string the string to translate
127	* @return string the string translation in the current language
128	*/
129	function pll__($string) {
130	return __($string, 'pll_string');
131	}
132
133	/*
134	* echoes a translated string (previously registered with pll_register_string)
135	*
136	* @since 0.6
137	*
138	* @param string $string the string to translate
139	*/
140	function pll_e($string) {
141	_e($string, 'pll_string');
142	}
143
144	/*
145	* returns true if Polylang manages languages and translations for this post type
146	*
147	* @since 1.0.1
148	*
149	* @param string post type name
150	* @return bool
151	*/
152	function pll_is_translated_post_type($post_type) {
153	global $polylang;
154	return isset($polylang) && $polylang->model->is_translated_post_type($post_type);
155	}
156
157	/*
158	* returns true if Polylang manages languages and translations for this taxonomy
159	*
160	* @since 1.0.1
161	*
162	* @param string taxonomy name
163	* @return bool
164	*/
165	function pll_is_translated_taxonomy($tax) {
166	global $polylang;
167	return isset($polylang) && $polylang->model->is_translated_taxonomy($tax);
168	}
169