WordPress函数：__checked_selected_helper

一、函数简介

用于选中、选中、禁用和只读的私人助手功能。（Private helper function for checked, selected, disabled and readonly.）  

二、函数参数

* @param mixed $helper One of the values to compare. * @param mixed $current The other value to compare if not just true. * @param bool $display Whether to echo or just return the string. * @param string $type The type of checked|selected|disabled|readonly we are doing. * @return string HTML attribute or empty string.  

三、函数案例

<?php __checked_selected_helper( $helper, $current, $display, $type ) ?>

   

四、源代码

/**
 * Private helper function for checked, selected, disabled and readonly.
 *
 * Compares the first two arguments and if identical marks as `$type`.
 *
 * @since 2.8.0
 * @access private
 *
 * @param mixed  $helper  One of the values to compare.
 * @param mixed  $current The other value to compare if not just true.
 * @param bool   $display Whether to echo or just return the string.
 * @param string $type    The type of checked|selected|disabled|readonly we are doing.
 * @return string HTML attribute or empty string.
 */
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;
}