ABO generator for PHP

$abo = new abo();
$abo->setComittentNumer(222780978);
$abo->setOrganization("Ceska nar.zdrav.poj.");
$abo->setDate('271198');
$abo->setSecurityKey('123456', '654321');
$account = $abo->addAccountFile(abo_account_file::INKASO);
$account->setBank('0300'); //ktera banka bude zpracovavat, ta nase
$account->setBankDepartment('82');
$group = $account->addGroup();
$group->setAccount(122780922);
$group->setDate('271198');
$group->addItem("174-1999738514/0300", 2000.5, 2220009813)
->setConstSym('8')
->setSpecSym('93653')
->setMessage('první èást');
$group->addItem("5152046/0300", 2000, 2220000598)
->setConstSym('8')
->setSpecSym('93654');
$group->addItem("192359658/0300", 2000, 2220000004)
->setConstSym('8') ->setSpecSym('93655');
$group->addItem("174-0346006514/0300", 2000, 2220497222)
->setConstSym('8')
->setSpecSym('93656')
->setMessage('první èást');
$group->addItem("492732514/0300", 2000, 2220000811)
->setConstSym('8')
->setSpecSym('93657');
echo '<pre>'.$abo->generate().'</pre>';