# betterdocs/4.9.3/includes/Admin/Importer/Parsers/WXR_Parser_SimpleXML.php

BetterDocs – AI Documentation, Knowledge Base, MCP Server, Docs, Wikis, FAQ & Chatbot, version 4.9.3. 285 lines.

- Page: https://pluginprobe.com/plugins/betterdocs/4.9.3/code/includes/Admin/Importer/Parsers/WXR_Parser_SimpleXML.php
- Raw: https://pluginprobe.com/plugins/betterdocs/4.9.3/raw/includes/Admin/Importer/Parsers/WXR_Parser_SimpleXML.php
- Modified: 2024-12-09T12:10:16+00:00

Line numbers below start at 1. Link to a line or a range by appending a fragment to the
page URL, for example `https://pluginprobe.com/plugins/betterdocs/4.9.3/code/includes/Admin/Importer/Parsers/WXR_Parser_SimpleXML.php#L10-L20`.

```php
<?php
namespace WPDeveloper\BetterDocs\Admin\Importer\Parsers;

use WP_Error;

if ( ! defined( 'ABSPATH' ) ) {
	exit; // Exit if accessed directly.
}

/**
 * WordPress extended RSS file parser implementations,
 * Originally made by WordPress part of WordPress/Importer.
 * https://plugins.trac.wordpress.org/browser/wordpress-importer/trunk/parsers/class-wxr-parser-simplexml.php
 *
 * What was done (by Elementor):
 * Reformat of the code.
 * Removed variable '$internal_errors'.
 * Changed text domain.
 */

/**
 * WXR Parser that makes use of the SimpleXML PHP extension.
 */
class WXR_Parser_SimpleXML {

	/**
	 * @param string $file
	 *
	 * @return array|WP_Error
	 */
	public function parse( $file ) {
		$authors    = [];
		$posts      = [];
		$categories = [];
		$tags       = [];
		$terms      = [];

		libxml_use_internal_errors( true );

		$dom       = new \DOMDocument();
		$old_value = null;

		$libxml_disable_entity_loader_exists = function_exists( 'libxml_disable_entity_loader' );

		if ( $libxml_disable_entity_loader_exists ) {
			$old_value = libxml_disable_entity_loader( true ); // phpcs:ignore Generic.PHP.DeprecatedFunctions.Deprecated
		}

		$success = $dom->loadXML( $this->file_get_contents( $file ) );

		if ( $libxml_disable_entity_loader_exists && ! is_null( $old_value ) ) {
			libxml_disable_entity_loader( $old_value ); // phpcs:ignore Generic.PHP.DeprecatedFunctions.Deprecated
		}

		if ( ! $success || isset( $dom->doctype ) ) {
			return new WP_Error( 'SimpleXML_parse_error', esc_html__( 'There was an error when reading this WXR file', 'betterdocs' ), libxml_get_errors() );
		}

		$xml = simplexml_import_dom( $dom );
		unset( $dom );

		// Halt if loading produces an error.
		if ( ! $xml ) {
			return new WP_Error( 'SimpleXML_parse_error', esc_html__( 'There was an error when reading this WXR file', 'betterdocs' ), libxml_get_errors() );
		}

		$wxr_version = $xml->xpath( '/rss/channel/wp:wxr_version' );
		if ( ! $wxr_version ) {
			return new WP_Error( 'WXR_parse_error', esc_html__( 'This does not appear to be a WXR file, missing/invalid WXR version number', 'betterdocs' ) );
		}

		$wxr_version = (string) trim( $wxr_version[0] );
		// Confirm that we are dealing with the correct file format.
		if ( ! preg_match( '/^\d+\.\d+$/', $wxr_version ) ) {
			return new WP_Error( 'WXR_parse_error', esc_html__( 'This does not appear to be a WXR file, missing/invalid WXR version number', 'betterdocs' ) );
		}

		$base_url = $xml->xpath( '/rss/channel/wp:base_site_url' );
		$base_url = (string) trim( $base_url[0] ?? '' );

		$base_blog_url = $xml->xpath( '/rss/channel/wp:base_blog_url' );
		if ( $base_blog_url ) {
			$base_blog_url = (string) trim( $base_blog_url[0] );
		} else {
			$base_blog_url = $base_url;
		}

		$page_on_front = $xml->xpath( '/rss/channel/wp:page_on_front' );

		if ( $page_on_front ) {
			$page_on_front = (int) $page_on_front[0];
		}

		$namespaces = $xml->getDocNamespaces();
		if ( ! isset( $namespaces['wp'] ) ) {
			$namespaces['wp'] = 'http://wordpress.org/export/1.1/';
		}
		if ( ! isset( $namespaces['excerpt'] ) ) {
			$namespaces['excerpt'] = 'http://wordpress.org/export/1.1/excerpt/';
		}

		// Grab authors.
		foreach ( $xml->xpath( '/rss/channel/wp:author' ) as $author_arr ) {
			$a                 = $author_arr->children( $namespaces['wp'] );
			$login             = (string) $a->author_login;
			$authors[ $login ] = [
				'author_id'           => (int) $a->author_id,
				'author_login'        => $login,
				'author_email'        => (string) $a->author_email,
				'author_display_name' => (string) $a->author_display_name,
				'author_first_name'   => (string) $a->author_first_name,
				'author_last_name'    => (string) $a->author_last_name,
			];
		}

		// Grab cats, tags and terms.
		foreach ( $xml->xpath( '/rss/channel/wp:category' ) as $term_arr ) {
			$t        = $term_arr->children( $namespaces['wp'] );
			$category = [
				'term_id'              => (int) $t->term_id,
				'category_nicename'    => (string) $t->category_nicename,
				'category_parent'      => (string) $t->category_parent,
				'cat_name'             => (string) $t->cat_name,
				'category_description' => (string) $t->category_description,
			];

			foreach ( $t->termmeta as $meta ) {
				$category['termmeta'][] = [
					'key'   => (string) $meta->meta_key,
					'value' => (string) $meta->meta_value,
				];
			}

			$categories[] = $category;
		}

		foreach ( $xml->xpath( '/rss/channel/wp:tag' ) as $term_arr ) {
			$t   = $term_arr->children( $namespaces['wp'] );
			$tag = [
				'term_id'         => (int) $t->term_id,
				'tag_slug'        => (string) $t->tag_slug,
				'tag_name'        => (string) $t->tag_name,
				'tag_description' => (string) $t->tag_description,
			];

			foreach ( $t->termmeta as $meta ) {
				$tag['termmeta'][] = [
					'key'   => (string) $meta->meta_key,
					'value' => (string) $meta->meta_value,
				];
			}

			$tags[] = $tag;
		}

		foreach ( $xml->xpath( '/rss/channel/wp:term' ) as $term_arr ) {
			$t    = $term_arr->children( $namespaces['wp'] );
			$term = [
				'term_id'          => (int) $t->term_id,
				'term_taxonomy'    => (string) $t->term_taxonomy,
				'slug'             => (string) $t->term_slug,
				'term_parent'      => (string) $t->term_parent,
				'term_name'        => (string) $t->term_name,
				'term_description' => (string) $t->term_description,
			];

			foreach ( $t->termmeta as $meta ) {
				$term['termmeta'][] = [
					'key'   => (string) $meta->meta_key,
					'value' => (string) $meta->meta_value,
				];
			}

			$terms[] = $term;
		}

		// Grab posts.
		foreach ( $xml->channel->item as $item ) {
			$post = [
				'post_title' => (string) $item->title,
				'guid'       => (string) $item->guid,
			];

			$dc                  = $item->children( 'http://purl.org/dc/elements/1.1/' );
			$post['post_author'] = (string) $dc->creator;

			$content              = $item->children( 'http://purl.org/rss/1.0/modules/content/' );
			$excerpt              = $item->children( $namespaces['excerpt'] );
			$post['post_content'] = (string) $content->encoded;
			$post['post_excerpt'] = (string) $excerpt->encoded;

			$wp                     = $item->children( $namespaces['wp'] );
			$post['post_id']        = (int) $wp->post_id;
			$post['post_date']      = (string) $wp->post_date;
			$post['post_date_gmt']  = (string) $wp->post_date_gmt;
			$post['comment_status'] = (string) $wp->comment_status;
			$post['ping_status']    = (string) $wp->ping_status;
			$post['post_name']      = (string) $wp->post_name;
			$post['status']         = (string) $wp->status;
			$post['post_parent']    = (int) $wp->post_parent;
			$post['menu_order']     = (int) $wp->menu_order;
			$post['post_type']      = (string) $wp->post_type;
			$post['post_password']  = (string) $wp->post_password;
			$post['is_sticky']      = (int) $wp->is_sticky;

			if ( isset( $wp->attachment_url ) ) {
				$post['attachment_url'] = (string) $wp->attachment_url;
			}

			foreach ( $item->category as $c ) {
				$att = $c->attributes();
				if ( isset( $att['nicename'] ) ) {
					$post['terms'][] = [
						'name'   => (string) $c,
						'slug'   => (string) $att['nicename'],
						'domain' => (string) $att['domain'],
					];
				}
			}

			foreach ( $wp->postmeta as $meta ) {
				$post['postmeta'][] = [
					'key'   => (string) $meta->meta_key,
					'value' => (string) $meta->meta_value,
				];
			}

			foreach ( $wp->comment as $comment ) {
				$meta = [];
				if ( isset( $comment->commentmeta ) ) {
					foreach ( $comment->commentmeta as $m ) {
						$meta[] = [
							'key'   => (string) $m->meta_key,
							'value' => (string) $m->meta_value,
						];
					}
				}

				$post['comments'][] = [
					'comment_id'           => (int) $comment->comment_id,
					'comment_author'       => (string) $comment->comment_author,
					'comment_author_email' => (string) $comment->comment_author_email,
					'comment_author_IP'    => (string) $comment->comment_author_IP,
					'comment_author_url'   => (string) $comment->comment_author_url,
					'comment_date'         => (string) $comment->comment_date,
					'comment_date_gmt'     => (string) $comment->comment_date_gmt,
					'comment_content'      => (string) $comment->comment_content,
					'comment_approved'     => (string) $comment->comment_approved,
					'comment_type'         => (string) $comment->comment_type,
					'comment_parent'       => (string) $comment->comment_parent,
					'comment_user_id'      => (int) $comment->comment_user_id,
					'commentmeta'          => $meta,
				];
			}

			$posts[] = $post;
		}

		return [
			'authors'       => $authors,
			'posts'         => $posts,
			'categories'    => $categories,
			'tags'          => $tags,
			'terms'         => $terms,
			'base_url'      => $base_url,
			'base_blog_url' => $base_blog_url,
			'page_on_front' => $page_on_front,
			'version'       => $wxr_version,
		];
	}

	/**
	 * @param $file
	 * @param mixed ...$args
	 * @return false|string
	 */
	public function file_get_contents( $file, ...$args ) {
		if ( ! is_file( $file ) || ! is_readable( $file ) ) {
			return false;
		}

		return file_get_contents( $file, ...$args );
	}
}

```