Im trying to pass a mulitidimensional Javascript array to another page on my site by:
using JSON.stringify on the array
assigning the result
You'll need to check the contents of $_POST["JSONfullInfoArray"]. If something doesn't parse json_decode will just return null. This isn't very helpful so when null is returned you should check json_last_error() to get more info on what went wrong.
$_POST["JSONfullInfoArray"]
json_decode
null
json_last_error()