Symfony3 - 未定义索引（解码JSON-> Object-> Array）

Question

I create Project Manager Software online, but I have error: picture with data and error

From JavaScript I send data(you can see on the picture), next I get it and decode JSON in result I have stdClass(I try get data for example $data->{"calendarId"}, but I get error: Undefined property: stdClass). Object is converted to array, but again is error. Fragment code:

if($request->isXmlHttpRequest()) {
        $data=json_decode($request->getContent());
        $data=get_object_vars($data);
        echo var_dump($data);
        echo print_r($data);
        //echo $data->{'startTime'} == ERROR Undefined property stdClass
        echo $data["startTime"];
}

I watched many soulation but problem still keep

Answer 1

The error seems very clear: You should use startTask not startTime

echo $data["startTask"];