Question

I want to create an mturk HIT that has a URL like so:
www.example.com?source=worker_id
where worker_id is the worker s ID code. I m initially going to create these from the mturk web UI, then once I get it working right, from PHP. But I can t figure out how to get at the worker s ID from the modified-HTML syntax of an mturk HIT.

Answer 1

Mechanical Turk will call your website with a URL that looks like:

www.example.com/?hitId=2384239&assignmentId=ASD98ASDFADJKH&workerId=ASDFASD8

In your php page that is at that location you can access the workerId (as well as the other Ids) like so:

<?php
$hitId        = $_REQUEST["hitId"];
$assignmentId = $_REQUEST["assignmentId"];
$workerId     = $_REQUEST["workerId"];

echo "Hit ID: $hitId
";
echo "Ass ID: $assignmentId
";
echo "Worker ID: $workerId
";
?>

Answer 2

Note that the workerId is NOT sent during the preview, only after the HIT has been accepted. If you re using an External HIT, you can create a cookie to see if it s a worker who has accepted a previous hit, but of course that method is unreliable.

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