code/Debug/Block/Abstract.php
public function getOptionArray(array $data)
    {
        $options = array();

        foreach ($data as $value) {
            $options[] = array('value' => $value, 'label' => $value);
        }

        return $options;
    }
public function getOptionArray(array $data)
    {
        $options = array();

        foreach ($data as $value) {
            $options[] = array('value' => $value, 'label' => $value);
        }

        return $options;
    }
Returns an option array where every element has its value and label filled in
with elements from passed array

@param array $data
@return array