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function is not described

_json_wp_die_handler() WP 5.1.0

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

This is the handler for wp_die() when processing JSON 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. Nothing.

Usage

_json_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 5.1.0 Introduced.

Code of _json_wp_die_handler() WP 5.8.2

function _json_wp_die_handler( $message, $title = '', $args = array() ) {
	list( $message, $title, $parsed_args ) = _wp_die_process_input( $message, $title, $args );

	$data = array(
		'code'              => $parsed_args['code'],
		'message'           => $message,
		'data'              => array(
			'status' => $parsed_args['response'],
		),
		'additional_errors' => $parsed_args['additional_errors'],
	);

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

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