polylang / include / cookie.php

cookie.php in Polylang 3.7.5, at include/cookie.php

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1	<?php
2	/**
3	* @package Polylang
4	*/
5
6	/**
7	* A class to manage manage the language cookie
8	*
9	* @since 2.9
10	*/
11	class PLL_Cookie {
12	/**
13	* Parses the cookie parameters.
14	*
15	* @since 2.9
16	*
17	* @param array $args {@see PLL_Cookie::set()}
18	* @return array
19	*/
20	protected static function parse_args( $args ) {
21	/**
22	* Filters the Polylang cookie duration.
23	*
24	* If a cookie duration of 0 is specified, a session cookie will be set.
25	* If a negative cookie duration is specified, the cookie is removed.
26	* /!\ This filter may be fired before the theme is loaded.
27	*
28	* @since 1.8
29	*
30	* @param int $duration Cookie duration in seconds.
31	*/
32	$expiration = (int) apply_filters( 'pll_cookie_expiration', YEAR_IN_SECONDS );
33
34	$defaults = array(
35	'expires' => 0 !== $expiration ? time() + $expiration : 0,
36	'path' => COOKIEPATH,
37	'domain' => COOKIE_DOMAIN, // Cookie domain must be set to false for localhost (default value for `COOKIE_DOMAIN`) thanks to Stephen Harris.
38	'secure' => is_ssl(),
39	'httponly' => false,
40	'samesite' => 'Lax',
41	);
42
43	$args = wp_parse_args( $args, $defaults );
44
45	/**
46	* Filters the Polylang cookie arguments.
47	* /!\ This filter may be fired before the theme is loaded.
48	*
49	* @since 3.6
50	*
51	* @param array $args {
52	* Optional. Array of arguments for setting the cookie.
53	*
54	* @type int $expires Cookie duration.
55	* If a cookie duration of 0 is specified, a session cookie will be set.
56	* If a negative cookie duration is specified, the cookie is removed.
57	* @type string $path Cookie path.
58	* @type string $domain Cookie domain. Must be set to false for localhost (default value for `COOKIE_DOMAIN`).
59	* @type bool $secure Should the cookie be sent only over https?
60	* @type bool $httponly Should the cookie be accessed only over http protocol?.
61	* @type string $samesite Either 'Strict', 'Lax' or 'None'.
62	* }
63	*/
64	return (array) apply_filters( 'pll_cookie_args', $args );
65	}
66
67	/**
68	* Sets the cookie.
69	*
70	* @since 2.9
71	*
72	* @param string $lang Language cookie value.
73	* @param array $args {
74	* Optional. Array of arguments for setting the cookie.
75	*
76	* @type string $path Cookie path, defaults to COOKIEPATH.
77	* @type string $domain Cookie domain, defaults to COOKIE_DOMAIN
78	* @type bool $secure Should the cookie be sent only over https?
79	* @type bool $httponly Should the cookie accessed only over http protocol? Defaults to false.
80	* @type string $samesite Either 'Strict', 'Lax' or 'None', defaults to 'Lax'.
81	* }
82	* @return void
83	*/
84	public static function set( $lang, $args = array() ) {
85	$args = self::parse_args( $args );
86
87	if ( ! headers_sent() && PLL_COOKIE !== false && self::get() !== $lang ) {
88	if ( version_compare( PHP_VERSION, '7.3', '<' ) ) {
89	$args['path'] .= '; SameSite=' . $args['samesite']; // Hack to set SameSite value in PHP < 7.3. Doesn't work with newer versions.
90	setcookie( PLL_COOKIE, $lang, $args['expires'], $args['path'], $args['domain'], $args['secure'], $args['httponly'] );
91	} else {
92	setcookie( PLL_COOKIE, $lang, $args );
93	}
94	}
95	}
96
97	/**
98	* Returns the language cookie value.
99	*
100	* @since 2.9
101	*
102	* @return string
103	*/
104	public static function get() {
105	return isset( $_COOKIE[ PLL_COOKIE ] ) ? sanitize_key( $_COOKIE[ PLL_COOKIE ] ) : '';
106	}
107	}
108