如何使用简单的html dom获取脚本值？

Question

I'm trying to get this content:

var block = new Block('page_competition_1_block_competition_tables_8', 'block_competition_tables', {"season_id":11663,"round_id":31554,"outgroup":false});

on this page:

view-source:http://it.soccerway.com/national/italy/serie-a/20152016/regular-season/r31554/?ICID=TN_02_01_02

Actually I made this code:

$html = file_get_html('http://it.soccerway.com/national/italy/serie-a/20152016/regular-season/r31554/?ICID=TN_02_01_02');

foreach ($html->find('script',0) as $element) 
{
   print_r($element);
}

But when I'll do the print there isn't no season_id and round_id, I want to get the value of this element. How I can achieve this?