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function is not described

_xml_wp_die_handler() WP 5.2.0

Kills WordPress execution and displays XML response with an error message.

This is the handler for wp_die() when processing XML requests.

This is an internal function for using it by WP core itself. It's not recommended to use this function in your code.

No Hooks.

Return

null. Null. Nothing.

Usage

_xml_wp_die_handler( $message, $title, $args );
$message(string) (required)
Error message.
$title(string)
Error title.
Default: ''
$args(string|array)
Arguments to control behavior.
Default: empty array

Changelog

Since 5.2.0 Introduced.

Code of _xml_wp_die_handler() WP 5.7

<?php
function _xml_wp_die_handler( $message, $title = '', $args = array() ) {
	list( $message, $title, $parsed_args ) = _wp_die_process_input( $message, $title, $args );

	$message = htmlspecialchars( $message );
	$title   = htmlspecialchars( $title );

	$xml = <<<EOD
<error>
    <code>{$parsed_args['code']}</code>
    <title><![CDATA[{$title}]]></title>
    <message><![CDATA[{$message}]]></message>
    <data>
        <status>{$parsed_args['response']}</status>
    </data>
</error>

EOD;

	if ( ! headers_sent() ) {
		header( "Content-Type: text/xml; charset={$parsed_args['charset']}" );
		if ( null !== $parsed_args['response'] ) {
			status_header( $parsed_args['response'] );
		}
		nocache_headers();
	}

	echo $xml;
	if ( $parsed_args['exit'] ) {
		die();
	}
}