92 lines
2.1 KiB
PHP
92 lines
2.1 KiB
PHP
<?php // phpcs:ignore WordPress.Files.FileName.InvalidClassFileName
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/**
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* The Sitemap xml and stylesheet abstract class.
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*
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* @since 0.9.0
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* @package RankMath
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* @subpackage RankMath\Sitemap
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* @author Rank Math <support@rankmath.com>
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*
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* @copyright Copyright (C) 2008-2019, Yoast BV
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* The following code is a derivative work of the code from the Yoast(https://github.com/Yoast/wordpress-seo/), which is licensed under GPL v3.
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*/
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namespace RankMath\Sitemap;
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defined( 'ABSPATH' ) || exit;
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/**
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* XML.
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*/
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abstract class XML {
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/**
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* HTTP protocol to use in headers.
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*
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* @var string
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*/
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protected $http_protocol = null;
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/**
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* Holds charset of output, might be converted.
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*
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* @var string
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*/
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protected $output_charset = 'UTF-8';
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/**
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* Send file headers.
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*
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* @param array $headers Array of headers.
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* @param bool $is_xsl True if sending headers are for XSL.
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*/
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protected function send_headers( $headers = [], $is_xsl = false ) {
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$defaults = [
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'X-Robots-Tag' => 'noindex',
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'Content-Type' => 'text/xml; charset=' . $this->get_output_charset(),
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'Pragma' => 'public',
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'Cache-Control' => 'no-cache, no-store, must-revalidate, max-age=0',
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'Expires' => 0,
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];
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$headers = wp_parse_args( $headers, $defaults );
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/**
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* Filter the sitemap HTTP headers.
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*
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* @param array $headers HTTP headers.
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* @param bool $is_xsl Whether these headers are for XSL.
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*/
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$headers = $this->do_filter( 'sitemap/http_headers', $headers, $is_xsl );
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header( $this->get_protocol() . ' 200 OK', true, 200 );
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foreach ( $headers as $header => $value ) {
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header( $header . ': ' . $value );
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}
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}
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/**
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* Get HTTP protocol.
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*
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* @return string
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*/
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protected function get_protocol() {
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if ( ! is_null( $this->http_protocol ) ) {
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return $this->http_protocol;
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}
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$this->http_protocol = ! empty( $_SERVER['SERVER_PROTOCOL'] ) ? sanitize_text_field( $_SERVER['SERVER_PROTOCOL'] ) : 'HTTP/1.1';
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return $this->http_protocol;
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}
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/**
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* Get `charset` for the output.
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*
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* @return string
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*/
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protected function get_output_charset() {
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return $this->output_charset;
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}
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}
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