php - google app engine execute tasks in task queue with php

Question

I am using task queue for my php web app so I cant execute that tasks and they are not execute automatically.This is my code

    $task1 = new PushTask('/home/gettasks',array(),['method'=> 'GET']);
    $queue = new PushQueue('shaq');
    $queue->addTasks([$task1]);

I am using codeigniter framework.When I am check task queue with admin console in app engine it shows my queue as a empty queue