i ajax Bu örnek çalıştı here

and i wonder if i can echo/print a specific element of the array at the php side
let's say i just want to print the second element which is "lastName"
i tried echo $t2lpostData[1]
it gives me error
"Undefined offset: 1 in C:\wamp\www\thank-you.php on line 12"

plz yardım,