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<?php define( 'WP_ADMIN', true ); // Most likely front-end scenario. function is_admin() { if ( isset( $GLOBALS['current_screen'] ) ) { return $GLOBALS['current_screen']->in_admin(); } elseif ( defined( 'WP_ADMIN' ) ) { return WP_ADMIN; } return false; } function wp_is_json_request() { if ( isset( $_SERVER['HTTP_ACCEPT'] ) && wp_is_json_media_type( $_SERVER['HTTP_ACCEPT'] ) ) { return true; } if ( isset( $_SERVER['CONTENT_TYPE'] ) && wp_is_json_media_type( $_SERVER['CONTENT_TYPE'] ) ) { return true; } return false; } function is_multisite() { if ( defined( 'MULTISITE' ) ) { return MULTISITE; } if ( defined( 'SUBDOMAIN_INSTALL' ) || defined( 'VHOST' ) || defined( 'SUNRISE' ) ) { return true; } return false; } function get_option( $what ) { switch ( $what ) : case 'WPLANG': return 'en_US'; endswitch; return false; } function get_locale() { global $locale, $wp_local_package; if ( isset( $locale ) ) { /** This filter is documented in wp-includes/l10n.php */ return apply_filters( 'locale', $locale ); } if ( isset( $wp_local_package ) ) { $locale = $wp_local_package; } // WPLANG was defined in wp-config. if ( defined( 'WPLANG' ) ) { $locale = WPLANG; } // If multisite, check options. if ( is_multisite() ) { // Don't check blog option when installing. if ( wp_installing() ) { $ms_locale = get_site_option( 'WPLANG' ); } else { $ms_locale = get_option( 'WPLANG' ); if ( false === $ms_locale ) { $ms_locale = get_site_option( 'WPLANG' ); } } if ( false !== $ms_locale ) { $locale = $ms_locale; } } else { $db_locale = get_option( 'WPLANG' ); if ( false !== $db_locale ) { $locale = $db_locale; } } if ( empty( $locale ) ) { $locale = 'en_US'; } /** * Filters the locale ID of the WordPress installation. * * @since 1.5.0 * * @param string $locale The locale ID. */ return apply_filters( 'locale', $locale ); } function get_user_locale( $user = 0 ) { $user_object = false; if ( 0 === $user && function_exists( 'wp_get_current_user' ) ) { $user_object = wp_get_current_user(); } elseif ( $user instanceof WP_User ) { $user_object = $user; } elseif ( $user && is_numeric( $user ) ) { $user_object = get_user_by( 'id', $user ); } if ( ! $user_object ) { return get_locale(); } $locale = $user_object->locale; return $locale ? $locale : get_locale(); } function apply_filters( $a, $b ) { return $b; } function sanitize_locale_name( $a ) { // Limit to A-Z, a-z, 0-9, '_', '-'. $sanitized = preg_replace( '/[^A-Za-z0-9_-]/', '', $locale_name ); /** * Filters a sanitized locale name string. * * @since 6.2.1 * * @param string $sanitized The sanitized locale name. * @param string $locale_name The locale name before sanitization. */ return apply_filters( 'sanitize_locale_name', $sanitized, $locale_name ); } function determine_locale_actual() { /** * Filters the locale for the current request prior to the default determination process. * * Using this filter allows to override the default logic, effectively short-circuiting the function. * * @since 5.0.0 * * @param string|null $locale The locale to return and short-circuit. Default null. */ $determined_locale = apply_filters( 'pre_determine_locale', null ); if ( $determined_locale && is_string( $determined_locale ) ) { return $determined_locale; } if ( isset( $GLOBALS['pagenow'] ) && 'wp-login.php' === $GLOBALS['pagenow'] && ( ! empty( $_GET['wp_lang'] ) || ! empty( $_COOKIE['wp_lang'] ) ) ) { if ( ! empty( $_GET['wp_lang'] ) ) { $determined_locale = sanitize_locale_name( $_GET['wp_lang'] ); } else { $determined_locale = sanitize_locale_name( $_COOKIE['wp_lang'] ); } } else if ( ( isset( $_GET['_locale'] ) && 'user' === $_GET['_locale'] && wp_is_json_request() ) || is_admin() ) { $determined_locale = get_user_locale(); } else { $determined_locale = get_locale(); } /** * Filters the locale for the current request. * * @since 5.0.0 * * @param string $locale The locale. */ return apply_filters( 'determine_locale', $determined_locale ); } function determine_locale_proposed() { /** * Filters the locale for the current request prior to the default determination process. * * Using this filter allows to override the default logic, effectively short-circuiting the function. * * @since 5.0.0 * * @param string|null $locale The locale to return and short-circuit. Default null. */ $determined_locale = apply_filters( 'pre_determine_locale', null ); if ( $determined_locale && is_string( $determined_locale ) ) { return $determined_locale; } if ( is_admin() || ( isset( $_GET['_locale'] ) && 'user' === $_GET['_locale'] && wp_is_json_request() ) ) { $determined_locale = get_user_locale(); } else { $determined_locale = get_locale(); } if ( isset( $GLOBALS['pagenow'] ) && 'wp-login.php' === $GLOBALS['pagenow'] ) { if ( ! empty( $_GET['wp_lang'] ) ) { $determined_locale = sanitize_locale_name( $_GET['wp_lang'] ) ?: $determined_locale; } elseif ( ! empty( $_COOKIE['wp_lang'] ) ) { $determined_locale = sanitize_locale_name( $_COOKIE['wp_lang'] ) ?: $determined_locale; } } /** * Filters the locale for the current request. * * @since 5.0.0 * * @param string $locale The locale. */ return apply_filters( 'determine_locale', $determined_locale ); } determine_locale_actual(); determine_locale_proposed(); $its = 1e5; $t = hrtime(true); for ( $i = 0; $i++ < $its; ) determine_locale_actual(); echo 'current: ', $old = ( hrtime(true)-$t ) / 1e9, "s\n"; $t = hrtime(true); for ( $i = 0; $i++ < $its; ) determine_locale_proposed(); echo 'proposed: ', $new = ( hrtime(true)-$t ) / 1e9, "s\n\n"; printf( 'Proposed is %sx faster', number_format( $old / $new, 2 ) );

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