WordPress at a glance
function is not described

_scalar_wp_die_handler() WP 3.4.0

Kill WordPress execution.

This is the handler for wp_die when processing APP requests.

No Hooks.

Return

Nothing (null).

Usage

_scalar_wp_die_handler( $message );
$message(string)
Response to print.
Default: ''

Code of scalar wp die handler: wp-includes/functions.php VER 5.0.3

<?php
function _scalar_wp_die_handler( $message = '' ) {
	if ( is_scalar( $message ) )
		die( (string) $message );
	die();
}