wp-includes/functions.php:4181Kills WordPress execution and displays XML response with an error message.
$messagestring$titlestringoptional''$argsstring|arrayoptionalarray()function _xmlrpc_wp_die_handler( $message, $title = '', $args = array() ) { global $wp_xmlrpc_server; list( $message, $title, $parsed_args ) = _wp_die_process_input( $message, $title, $args ); if ( ! headers_sent() ) { nocache_headers(); } if ( $wp_xmlrpc_server ) { $error = new IXR_Error( $parsed_args['response'], $message ); $wp_xmlrpc_server->output( $error->getXml() ); } if ( $parsed_args['exit'] ) { die(); }}Introduced in 3.2.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/functions.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.