function addTeam($team, $p1, $p2 = "", $p3 = "")
{
    $sql = "INSERT INTO mad_team(team, register_date) VALUES(:team, NOW())";
    $parms = array(':team', $team);
    $result = DatabaseHandler::Execute($sql, $parms);
    $teamid = getTeamId($team);
    if ($p1) {
        $sql = "INSERT INTO mad_registrations(user_id, team_id) VALUES(:p1, :teamid)";
        $parms = array(':p1' => $p1, ':teamid' => $teamid);
        $result = DatabaseHandler::Execute($sql, $parms);
    }
    if ($p2) {
        $sql = "INSERT INTO mad_registrations(user_id, team_id) VALUES(:p2, :teamid)";
        $parms = array(':p2' => $p2, ':teamid' => $teamid);
        $result = DatabaseHandler::Execute($sql, $parms);
    }
    if ($p3) {
        $sql = "INSERT INTO mad_registrations(user_id, team_id) VALUES(:p3, :teamid)";
        $parms = array(':p3' => $p3, ':teamid' => $teamid);
        $result = DatabaseHandler::Execute($sql, $parms);
    }
    return 1;
}
<?php
	
	include_once 'interface.php';

	if(isset($_POST['eventid'])) {
		echo json_encode(getTeamId($_POST['eventid']));
	}

	if(isset($_POST['tatid'])){
		echo json_encode(partEventList($_POST['tatid']));
	}

	if(isset($_POST['rgeventid']) && 
		isset($_POST['rgteamid']) &&
		isset($_POST['rgcaptainid']) &&
		isset($_POST['rgpart1']) &&
		isset($_POST['rgpart2']) &&
		isset($_POST['rgpart3']) &&
		isset($_POST['rgpart4']) &&
		isset($_POST['rgpart5']) &&
		isset($_POST['rgpart6'])){
			updateTeam($_POST['rgeventid'],
						$_POST['rgteamid'],
						$_POST['rgcaptainid'],
						$_POST['rgpart1'],
						$_POST['rgpart2'],
						$_POST['rgpart3'],
						$_POST['rgpart4'],
						$_POST['rgpart5'],
						$_POST['rgpart6']);
	}