works always with CLI, but not Apache

So I've got a request that always works when I run it in CLI, but using a browser, it errors out sometimes. It'll error out when I try to run the request repeatedly, like just refreshing right after it loads. Is there any setting for apache2 or php.ini that I should set? Code is here: http://pastebin.com/d67d627b2 SoapApi Class just extends SoapClient by formatting it right like: function soapGetDHCPLeasesStatus() { // Get the list of DHCP leases. $rc = $this->GetDHCPLeasesStatus(array()); return $rc; }