public OnPlayerConnect(playerid)
{

        new query[256];

	format(query, sizeof(query), "SELECT * FROM 'gebruikers' WHERE 'gebruikersnaam' = 'Kevin_Elias'");

	mysql_query(query);
	mysql_store_result();

	if(mysql_num_rows() == 1)
	{
	    print("Send client message gebruikersnaam is al in gebruik");
	    SendClientMessage(playerid, -1, "Deze gebruikersnaam is al in gebruik!");
		print("show player dialog 0");
	    ShowPlayerDialog(playerid, 0, DIALOG_STYLE_INPUT, "Login", "Log hier in", "login", "cancel");

	}
	else
	{
	    print("SendClientMessage je mag deze gebruikersnaam registreren");
	    SendClientMessage(playerid, -1, "Je mag deze gebruikersnaam registreren");
	    print("ShowPlayerDialog 1");
	    ShowPlayerDialog(playerid, 1, DIALOG_STYLE_INPUT, "Registreer", "Registreer hier", "Registreer", "cancel");

 	}
	return 1;
}