|
public addOptGroup ( string $label, array $options ) : |
||
| $label | string | |
| $options | array | |
| 리턴 | a reference to the added optgroup | |
public function addOptGroup($label, $options)
{
if (empty($label)) {
throw new \InvalidArgumentException(hsc('<optgroup> must have a label!'));
}
$this->optGroups[$label] = new OptGroup($label, $options);
return end($this->optGroups);
}