字符串转数组

//判断字符串转数组
private function strToArray($ids){
    if(!str_contains($ids,","))
        return _response([],100,"data error");
    $ids = explode(",", $ids);
    if(count($ids) == 0)
        return _response([],100,"data error");
    foreach ($ids as &$v)
        $v = $this->decode($v);
    return $ids;
}