nal. Additional arguments for retrieving embed HTML.
		 *                         See wp_oembed_get() for accepted arguments. Default empty.
		 */
		$provider = apply_filters( 'oembed_fetch_url', $provider, $url, $args );

		foreach ( array( 'json', 'xml' ) as $format ) {
			$result = $this->_fetch_with_format( $provider, $format );
			if ( is_wp_error( $result ) && 'not-implemented' === $result->get_error_code() ) {
				continue;
			}

			return ( $result && ! is_wp_error( $result ) ) ? $result : false;
		}

		return false;
	}

	/**
	 * Fetches result from an oEmbed provider for a specific format and complete provider URL
	 *
	 * @since 3.0.0
	 *
	 * @param string $provider_url_with_args URL to the provider with full arguments list (url, maxheight, etc.)
	 * @param string $format                 Format to use.
	 * @return object|false|WP_Error The result in the form of an object on success, false on failure.
	 */
	private function _fetch_with_format( $provider_url_with_args, $format ) {
		$provider_url_with_args = add_query_arg( 'format', $format, $provider_url_with_args );

		/** This filter is documented in wp-includes/class-wp-oembed.php */
		$args = apply_filters( 'oembed_remote_get_args', array(), $provider_url_with_args );

		$response = wp_safe_remote_get( $provider_url_with_args, $args );

		if ( 501 === wp_remote_retrieve_response_code( $response ) ) {
			return new WP_Error( 'not-implemented' );
		}

		$body = wp_remote_retrieve_body( $response );
		if ( ! $body ) {
			return false;
		}

		$parse_method = "_parse_$format";

		return $this->$parse_method( $body );
	}

	/**
	 * Parses a json response body.
	 *
	 * @since 3.0.0
	 *
	 * @param string $response_body
	 * @return object|false
	 */
	private function _parse_json( $response_body ) {
		$data = json_decode( trim( $response_body ) );

		return ( $data && is_object( $data ) ) ? $data : false;
	}

	/**
	 * Parses an XML response body.
	 *
	 * @since 3.0.0
	 *
	 * @param string $response_body
	 * @return object|false
	 */
	private function _parse_xml( $response_body ) {
		if ( ! function_exists( 'libxml_disable_entity_loader' ) ) {
			return false;
		}

		if ( PHP_VERSION_ID < 80000 ) {
			/*
			 * This function has been deprecated in PHP 8.0 because in libxml 2.9.0, external entity loading
			 * is disabled by default, so this function is no longer needed to protect against XXE attacks.
			 */
			$loader = libxml_disable_entity_loader( true );
		}

		$errors = libxml_use_internal_errors( true );

		$return = $this->_parse_xml_body( $response_body );

		libxml_use_internal_errors( $errors );

		if ( PHP_VERSION_ID < 80000 && isset( $loader ) ) {
			// phpcs:ignore PHPCompatibility.FunctionUse.RemovedFunctions.libxml_disable_entity_loaderDeprecated
			libxml_disable_entity_loader( $loader );
		}

		return $return;
	}

	/**
	 * Serves as a helper function for parsing an XML response body.
	 *
	 * @since 3.6.0
	 *
	 * @param string $response_body
	 * @return stdClass|false
	 */
	private function _parse_xml_body( $response_body ) {
		if ( ! function_exists( 'simplexml_import_dom' ) || ! class_exists( 'DOMDocument', false ) ) {
			return false;
		}

		$dom     = new DOMDocument();
		$success = $dom->loadXML( $response_body );
		if ( ! $success ) {
			return false;
		}

		if ( isset( $dom->doctype ) ) {
			return false;
		}

		foreach ( $dom->childNodes as $child ) {
			if ( XML_DOCUMENT_TYPE_NODE === $child->nodeType ) {
				return false;
			}
		}

		$xml = simplexml_import_dom( $dom );
		if ( ! $xml ) {
			return false;
		}

		$return = new stdClass();
		foreach ( $xml as $key => $value ) {
			$return->$key = (string) $value;
		}

		return $return;
	}

	/**
	 * Converts a data object from WP_oEmbed::fetch() and returns the HTML.
	 *
	 * @since 2.9.0
	 *
	 * @param object $data A data object result from an oEmbed provider.
	 * @param string $url  The URL to the content that is desired to be embedded.
	 * @return string|false The HTML needed to embed on success, false on failure.
	 */
	public function data2html( $data, $url ) {
		if ( ! is_object( $data ) || empty( $data->type ) ) {
			return false;
		}

		$return = false;

		switch ( $data->type ) {
			case 'photo':
				if ( empty( $data->url ) || empty( $data->width ) || empty( $data->height ) ) {
					break;
				}
				if ( ! is_string( $data->url ) || ! is_numeric( $data->width ) || ! is_numeric( $data->height ) ) {
					break;
				}

				$title  = ! empty( $data->title ) && is_string( $data->title ) ? $data->title : '';
				$return = '<a href="' . esc_url( $url ) . '"><img src="' . esc_url( $data->url ) . '" alt="' . esc_attr( $title ) . '" width="' . esc_attr( $data->width ) . '" height="' . esc_attr( $data->height ) . '" /></a>';
				break;

			case 'video':
			case 'rich':
				if ( ! empty( $data->html ) && is_string( $data->html ) ) {
					$return = $data->html;
				}
				break;

			case 'link':
				if ( ! empty( $data->title ) && is_string( $data->title ) ) {
					$return = '<a href="' . esc_url( $url ) . '">' . esc_html( $data->title ) . '</a>';
				}
				break;

			default:
				$return = false;
		}

		/**
		 * Filters the returned oEmbed HTML.
		 *
		 * Use this filter to add support for custom data types, or to filter the result.
		 *
		 * @since 2.9.0
		 *
		 * @param string $return The returned oEmbed HTML.
		 * @param object $data   A data object result from an oEmbed provider.
		 * @param string $url    The URL of the content to be embedded.
		 */
		return apply_filters( 'oembed_dataparse', $return, $data, $url );
	}

	/**
	 * Strips any new lines from the HTML.
	 *
	 * @since 2.9.0 as strip_scribd_newlines()
	 * @since 3.0.0
	 *
	 * @param string $html Existing HTML.
	 * @param object $data Data object from WP_oEmbed::data2html()
	 * @param string $url The original URL passed to oEmbed.
	 * @return string Possibly modified $html
	 */
	public function _strip_newlines( $html, $data, $url ) {
		if ( ! str_contains( $html, "\n" ) ) {
			return $html;
		}

		$count     = 1;
		$found     = array();
		$token     = '__PRE__';
		$search    = array( "\t", "\n", "\r", ' ' );
		$replace   = array( '__TAB__', '__NL__', '__CR__', '__SPACE__' );
		$tokenized = str_replace( $search, $replace, $html );

		preg_match_all( '#(<pre[^>]*>.+?</pre>)#i', $tokenized, $matches, PREG_SET_ORDER );
		foreach ( $matches as $i => $match ) {
			$tag_html  = str_replace( $replace, $search, $match[0] );
			$tag_token = $token . $i;

			$found[ $tag_token ] = $tag_html;
			$html                = str_replace( $tag_html, $tag_token, $html, $count );
		}

		$replaced = str_replace( $replace, $search, $html );
		$stripped = str_replace( array( "\r\n", "\n" ), '', $replaced );
		$pre      = array_values( $found );
		$tokens   = array_keys( $found );

		return str_replace( $tokens, $pre, $stripped );
	}
}