__checked_selected_helper() │ WP 2.8.0

Private helper function for checked, selected, disabled and readonly.

Compares the first two arguments and if identical marks as $type.

Internal function — this function is designed to be used by the kernel itself. It is not recommended to use this function in your code.

No Hooks.

Return

String. HTML attribute or empty string.

Usage

__checked_selected_helper( $helper, $current, $display, $type );
$helper(mixed) (required)
One of the values to compare.
$current(mixed) (required)
The other value to compare if not just true.
$display(true|false) (required)
Whether to echo or just return the string.
$type(string) (required)
The type of checked|selected|disabled|readonly we are doing.

Changelog

Since 2.8.0 Introduced.

__checked_selected_helper() code WP 6.5.2

wp-includes/general-template.php 
function __checked_selected_helper( $helper, $current, $display, $type ) { // phpcs:ignore WordPress.NamingConventions.ValidFunctionName.FunctionDoubleUnderscore,PHPCompatibility.FunctionNameRestrictions.ReservedFunctionNames.FunctionDoubleUnderscore
	if ( (string) $helper === (string) $current ) {
		$result = " $type='$type'";
	} else {
		$result = '';
	}

	if ( $display ) {
		echo $result;
	}

	return $result;
}