* Parse OPML XML files and store in globals.
* @subpackage Administration
if ( ! defined( 'ABSPATH' ) ) {
* XML callback function for the start of a new XML tag.
* @global array $descriptions
* @param resource $parser XML Parser resource.
* @param string $tag_name XML element name.
* @param array $attrs XML element attributes.
function startElement( $parser, $tag_name, $attrs ) { // phpcs:ignore WordPress.NamingConventions.ValidFunctionName.FunctionNameInvalid
global $names, $urls, $targets, $descriptions, $feeds;
if ( 'OUTLINE' === $tag_name ) {
if ( isset( $attrs['TEXT'] ) ) {
if ( isset( $attrs['TITLE'] ) ) {
if ( isset( $attrs['URL'] ) ) {
if ( isset( $attrs['HTMLURL'] ) ) {
$url = $attrs['HTMLURL'];
$targets[] = isset( $attrs['TARGET'] ) ? $attrs['TARGET'] : '';
$feeds[] = isset( $attrs['XMLURL'] ) ? $attrs['XMLURL'] : '';
$descriptions[] = isset( $attrs['DESCRIPTION'] ) ? $attrs['DESCRIPTION'] : '';
* XML callback function that is called at the end of a XML tag.
* @param resource $parser XML Parser resource.
* @param string $tag_name XML tag name.
function endElement( $parser, $tag_name ) { // phpcs:ignore WordPress.NamingConventions.ValidFunctionName.FunctionNameInvalid
if ( ! function_exists( 'xml_parser_create' ) ) {
trigger_error( __( "PHP's XML extension is not available. Please contact your hosting provider to enable PHP's XML extension." ) );
wp_die( __( "PHP's XML extension is not available. Please contact your hosting provider to enable PHP's XML extension." ) );
$xml_parser = xml_parser_create();
// Set the functions to handle opening and closing tags.
xml_set_element_handler( $xml_parser, 'startElement', 'endElement' );
if ( ! xml_parse( $xml_parser, $opml, true ) ) {
/* translators: 1: Error message, 2: Line number. */
__( 'XML Error: %1$s at line %2$s' ),
xml_error_string( xml_get_error_code( $xml_parser ) ),
xml_get_current_line_number( $xml_parser )
// Free up memory used by the XML parser.
xml_parser_free( $xml_parser );