name : cache-compat.php <?php /** * A class to manage specific compatibility issue with cache plugins * Tested with WP Rocket 2.10.7 * * @since 2.3 */ class PLL_Cache_Compat { /** * Setups actions * * @since 2.3 */ public function init() { if ( PLL_COOKIE ) { add_action( 'wp_print_footer_scripts', array( $this, 'add_cookie_script' ) ); } // Since version 3.0.5, WP Rocket does not serve the cached page if our cookie is not set if ( ! defined( 'WP_ROCKET_VERSION' ) || version_compare( WP_ROCKET_VERSION, '3.0.5', '<' ) ) { add_action( 'wp', array( $this, 'do_not_cache_site_home' ) ); } } /** * Currently all tested cache plugins don't send cookies with cached pages * This makes us impossible know the language of the last browsed page * This functions allows to create the cookie in javascript as a workaround * * @since 2.3 */ public function add_cookie_script() { $domain = ( 2 == PLL()->options['force_lang'] ) ? wp_parse_url( PLL()->links_model->home, PHP_URL_HOST ) : COOKIE_DOMAIN; $js = sprintf( '(function() { var expirationDate = new Date(); expirationDate.setTime( expirationDate.getTime() + %d * 1000 ); document.cookie = "%s=%s; expires=" + expirationDate.toUTCString() + "; path=%s%s"; }());', esc_js( apply_filters( 'pll_cookie_expiration', YEAR_IN_SECONDS ) ), esc_js( PLL_COOKIE ), esc_js( pll_current_language() ), esc_js( COOKIEPATH ), $domain ? '; domain=' . esc_js( $domain ) : '' ); echo '<script type="text/javascript">' . $js . '</script>'; // phpcs:ignore WordPress.Security.EscapeOutput } /** * Informs cache plugins not to cache the home in the default language * When the detection of the browser preferred language is active * * @since 2.3 */ public function do_not_cache_site_home() { if ( ! defined( 'DONOTCACHEPAGE' ) && PLL()->options['browser'] && PLL()->options['hide_default'] && is_front_page() && pll_current_language() === pll_default_language() ) { define( 'DONOTCACHEPAGE', true ); } } }