« MODx Parse Error »

MODx encountered the following error while attempting to parse the requested resource:
« PHP Parse Error »
 
PHP error debug
  Error: Function split() is deprecated 
  Error type/ Nr.: - 8192 
  File: /home/friends/public_html/newemcosite/manager/includes/tmplvars.format.inc.php 
  Line: 21 
  Line 21 source: $cp = split("&",$paramstring);  
 
Parser timing
  MySQL: 0.0122 s(3 Requests)
  PHP: 0.0915 s 
  Total: 0.1038 s