framework/helpers/BaseArrayHelper.php
public static function htmlDecode($data, $valuesOnly = true)
    {
        $d = [];
        foreach ($data as $key => $value) {
            if (!$valuesOnly && is_string($key)) {
                $key = htmlspecialchars_decode($key, ENT_QUOTES);
            }
            if (is_string($value)) {
                $d[$key] = htmlspecialchars_decode($value, ENT_QUOTES);
            } elseif (is_array($value)) {
                $d[$key] = static::htmlDecode($value);
            } else {
                $d[$key] = $value;
            }
        }

        return $d;
    }
public static function htmlDecode($data, $valuesOnly = true)
    {
        $d = [];
        foreach ($data as $key => $value) {
            if (!$valuesOnly && is_string($key)) {
                $key = htmlspecialchars_decode($key, ENT_QUOTES);
            }
            if (is_string($value)) {
                $d[$key] = htmlspecialchars_decode($value, ENT_QUOTES);
            } elseif (is_array($value)) {
                $d[$key] = static::htmlDecode($value);
            } else {
                $d[$key] = $value;
            }
        }

        return $d;
    }
Decodes HTML entities into the corresponding characters in an array of strings.
Only array values will be decoded by default.
If a value is an array, this method will also decode it recursively.
Only string values will be decoded.
@param array $data data to be decoded
@param bool $valuesOnly whether to decode array values only. If false,
both the array keys and array values will be decoded.
@return array the decoded data
@see https://secure.php.net/manual/en/function.htmlspecialchars-decode.php