function thb_get_structured_options_from_array($input, $value)
{
$opts = "";
foreach ($input as $optgroup => $options) {
$opts .= "<optgroup label='{$optgroup}'>";
$opts .= thb_get_options_from_array($options);
$opts .= "</optgroup>";
}
return $opts;
}
/**
* Render the control.
*
* @return void
*/
public function render_content()
{
$this->options = array('scroll' => __('Scroll', 'thb_text_domain'), 'fixed' => __('Fixed', 'thb_text_domain'));
?>
<label>
<span class="customize-control-title"><?php
echo esc_html($this->label);
?>
</span>
<select <?php
$this->link();
?>
class="background-attachment">
<?php
echo thb_get_options_from_array($this->options);
?>
</select>
</label>
<?php
}