Array being chopped off over ajax post. Ajax posting limit?

I have a multidimensional array, which consists of 426 smaller arrays, which also comprise of 4 attributes.. Below is an example of one of 426 arrays...

    array( //Main array
          0 => array( //1 of 426 arrays
               'name' => 'Danny', 
               'email' => 'your@email.com', 
               'picture_url' => 'http://www.website.com', 
                'score' => 89
          ),
    )

I'm posting this array with jquery's ajax functions to a php file, which adds them to a database... My problem is that the array seems to be chopped off when it's posted to the php file. Only about half the array actually reaches the php file...

This has led me to believe that there may be a file size limit when posting over ajax. However, the size of my array seems to be relatively small..

I'm running my application on WAMP..

Can anyone shed some light what's possibly happening?

UPDATE:

I'm posting my array like so:

$.ajax({
  type: "POST",
  url: "invite_friends.php",
  data: {
    theID: me.id,
    friends: multidimensional_array //This is the array <---
  },
  success: function(data, textStatus, jqXHR) {
    return console.log(data);
  },
  error: function(jqXHR, textStatus, errorThrown) {
    return alert("Error: Oops, there has been a problem");
  }
});

And I retrieve my array (in invite_friends.php) like so..

if($_POST['friends']) {
    $friends = $_POST['friends'];   
} else {
    $friends = FALSE;
}