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function is not described

__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

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

String. HTML attribute or empty string

Usage

__checked_selected_helper( $helper, $current, $echo, $type ) // phpcs:ignore WordPress.NamingConventions.ValidFunctionName.FunctionDoubleUnderscore,PHPCompatibility.FunctionNameRestrictions.ReservedFunctionNames.FunctionDoubleUnderscore;
$helper(mixed) (required)
One of the values to compare
$current(mixed) (required)
(true) The other value to compare if not just true
$echo(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.

Code of __checked_selected_helper() WP 5.7.2

<?php
function __checked_selected_helper( $helper, $current, $echo, $type ) { // phpcs:ignore WordPress.NamingConventions.ValidFunctionName.FunctionDoubleUnderscore,PHPCompatibility.FunctionNameRestrictions.ReservedFunctionNames.FunctionDoubleUnderscore
	if ( (string) $helper === (string) $current ) {
		$result = " $type='$type'";
	} else {
		$result = '';
	}

	if ( $echo ) {
		echo $result;
	}

	return $result;
}