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cookie.php
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<?php /** * @package Polylang */ /** * A class to manage manage the language cookie * * @since 2.9 */ class PLL_Cookie { /** * Parses the cookie parameters. * * @since 2.9 * * @param array $args {@see PLL_Cookie::set()} * @return array */ protected static function parse_args( $args ) { /** * Filters the Polylang cookie duration. * * If a cookie duration of 0 is specified, a session cookie will be set. * If a negative cookie duration is specified, the cookie is removed. * /!\ This filter may be fired *before* the theme is loaded. * * @since 1.8 * * @param int $duration Cookie duration in seconds. */ $expiration = (int) apply_filters( 'pll_cookie_expiration', YEAR_IN_SECONDS ); $defaults = array( 'expires' => 0 !== $expiration ? time() + $expiration : 0, 'path' => COOKIEPATH, 'domain' => COOKIE_DOMAIN, // Cookie domain must be set to false for localhost (default value for `COOKIE_DOMAIN`) thanks to Stephen Harris. 'secure' => is_ssl(), 'httponly' => false, 'samesite' => 'Lax', ); $args = wp_parse_args( $args, $defaults ); /** * Filters the Polylang cookie arguments. * /!\ This filter may be fired *before* the theme is loaded. * * @since 3.6 * * @param array $args { * Optional. Array of arguments for setting the cookie. * * @type int $expires Cookie duration. * If a cookie duration of 0 is specified, a session cookie will be set. * If a negative cookie duration is specified, the cookie is removed. * @type string $path Cookie path. * @type string $domain Cookie domain. Must be set to false for localhost (default value for `COOKIE_DOMAIN`). * @type bool $secure Should the cookie be sent only over https? * @type bool $httponly Should the cookie be accessed only over http protocol?. * @type string $samesite Either 'Strict', 'Lax' or 'None'. * } */ return (array) apply_filters( 'pll_cookie_args', $args ); } /** * Sets the cookie. * * @since 2.9 * * @param string $lang Language cookie value. * @param array $args { * Optional. Array of arguments for setting the cookie. * * @type string $path Cookie path, defaults to COOKIEPATH. * @type string $domain Cookie domain, defaults to COOKIE_DOMAIN * @type bool $secure Should the cookie be sent only over https? * @type bool $httponly Should the cookie accessed only over http protocol? Defaults to false. * @type string $samesite Either 'Strict', 'Lax' or 'None', defaults to 'Lax'. * } * @return void */ public static function set( $lang, $args = array() ) { $args = self::parse_args( $args ); if ( ! headers_sent() && PLL_COOKIE !== false && self::get() !== $lang ) { if ( version_compare( PHP_VERSION, '7.3', '<' ) ) { $args['path'] .= '; SameSite=' . $args['samesite']; // Hack to set SameSite value in PHP < 7.3. Doesn't work with newer versions. setcookie( PLL_COOKIE, $lang, $args['expires'], $args['path'], $args['domain'], $args['secure'], $args['httponly'] ); } else { setcookie( PLL_COOKIE, $lang, $args ); } } } /** * Returns the language cookie value. * * @since 2.9 * * @return string */ public static function get() { return isset( $_COOKIE[ PLL_COOKIE ] ) ? sanitize_key( $_COOKIE[ PLL_COOKIE ] ) : ''; } }