Get Multi-Reg Participant Count

$participants = civicrm_api3('Participant', 'get', array(
			'sequential' => 1,
			'status_id' => "Registered",
			'event_id' => array(
				'IN' => $event_ids
			),
			// Get price set info if available in line below
			'api.LineItem.get' => array('entity_table' => "civicrm_participant", 'entity_id' => "\$value.participant_id")	
		)) ['values'];

		
		/* 
		Events can use price sets to allow for 1 reg to have mult attendees. 
		To account for this, we can check if a multi-registrant price set is being
        used, and if so we use that number for overall attendee count instead
        of just counting the number of registrations

		Example when price set not used:
		participant["api.LineItem.get"] = {
                "is_error": 0,
                "version": 3,
                "count": 0,
                "values": []
            }
        
		Example when price set is used:
		participant["api.LineItem.get"] = {
                "is_error": 0,
                "version": 3,
                "count": 1,
                "id": 325,
                "values": [
                    {
                        "id": "325",
                        "entity_table": "civicrm_participant",
                        "entity_id": "30",
                        "contribution_id": "324",
                        "price_field_id": "9",
                        "label": "2",
                        "qty": "1.00",
                        "unit_price": "0.00",
                        "line_total": "0.00",
                        "participant_count": "2",
                        "price_field_value_id": "18",
                        "financial_type_id": "4",
                        "deductible_amount": "0.00"
                    }
                ]
            }
		*/
		foreach ($participants as $key=>$p) {
			if ($p["api.LineItem.get"]["count"]) {
				$participants[$key]['participant_count']=$p["api.LineItem.get"]["values"][0]["participant_count"];
			} else {
				$participants[$key]['participant_count']=1;
			}
		} 
		
		foreach($participants as $participant) {
				$total_count+=$participant['participant_count'];
		}