数组中的索引关联数据全部统一转换成json对象

public static function encode(&$var)
{
    return '{'.implode(',',self::encodeExcute($var)).'}';
}
 
private static function encodeExcute(&$var)
{
    $json = array();
    switch (gettype($var))
    {
        case 'array':
            foreach($var as $key=>$value)
            {
                if(is_array($value))
                {
                    $json[] = '"'.$key.'":{'.implode(',',self::encodeExcute($value)).'}';
                    //$json[$key] = self::encode($value);
                } elseif (is_object($value)) {
                    $json[] = "\\"{$key}\\":".json_encode($value->attributes);
                } else {
                    echo 'ERROR 未知类型,还未解析';
                    Yii::app()->end();
                }
            }
            break;
        case 'object':
            break;
    }
    return $json;
}