Using unserialize in PHP throws the same error repeatedly

Question

I'm trying to serialize a very large 2d array. But, the moment I try to unserialize the array, I start getting the same error over and over again. And, if it is the entire serialized array that I'm trying to serialize, then it keeps repeating that same error until my Firefox crashes. 

Here's that annoying error:

Warning: unserialize() [function.unserialize]: Node no longer exists in /var/www/dev/wc_paul/inc/analyzerTester.php on line 24

Why could this be happening? How can I resolve this error it throws?

I built this array by pulling the values out of an XML response from another server. So, if serialize might not work, are there other ways in which I could save or store it?

Answer 1

I googled 'Node no longer exists', and could easily solve this by referring to a couple of its initial search results that also had a crisp explanation for why this happens.

Here are the sites I looked up:
https://www.drupal.org/forum/support/module-development-and-code-questions/2007-12-09/mysterious-error-node-no-longer

Do check, hope it helps! :)