Função para criar usuário novo em Joomla 1.5

Código da Função

<?php
function CreateNewUser($name, $username, $email, $password, $registerDate = NULL, $usertype = 'Registered', $block = '0', $sendEmail = '1', $gid = '18') {
global $db;

$db = & JFactory::getDBO();
jimport('joomla.user.helper');

//Make the joomla password hash
$salt = JUserHelper::genRandomPassword(32);
$crypt = JUserHelper::getCryptedPassword($password, $salt);
$joomlapassword = $crypt . ':' . $salt;

//Table #__users
//Informations about the user
$user = new stdClass;
$user->id = NULL;
$user->name = $name;
$user->username = $username;
$user->email = $email;
$user->password = $joomlapassword;
$user->registerDate = registerDate;
$user->usertype = $usertype;
$user->block = $block;
$user->sendEmail = $sendEmail;
$user->gid = $gid;

if (!$db->insertObject('#__users', $user, 'id')) {
echo $db->stderr();
return false;
}


//Table #__core_acl_aro
//Discover what is the last value of value in #__core_acl_aro
$query = "SELECT value FROM #__core_acl_aro ORDER BY id DESC LIMIT 1";
$db->setQuery($query);
$coreaclarolastvalue = $db->loadResult();

$coreaclaro = new stdClass;
$coreaclaro->id = NULL;
$coreaclaro->section_value = 'users';
$coreaclaro->value = $coreaclarolastvalue + 1;
$coreaclaro->order_value = NULL;
$coreaclaro->name = $name;
$coreaclaro->hidden = NULL;

if (!$db->insertObject('#__core_acl_aro', $coreaclaro, 'id')) {
echo $db->stderr();
return false;
}

//Table #__core_acl_groups_aro_map
$coreaclmap = new stdClass;
$coreaclmap->group_id = $gid;
$coreaclmap->section_value = NULL;
$coreaclmap->aro_id = $coreaclaro->id; // maybe just $user->id ?

if (!$db->insertObject('#__core_acl_groups_aro_map', $coreaclmap)) {
echo $db->stderr();
return false;
}

$CreateNewUserInfo = array($user->id, $user->name, $user->username, $user->email);
return $CreateNewUserInfo;
}

Exemplo de Implantação

//This exemple will take data from one post, for example
$username = JRequest::getVar('username');
$name = JRequest::getvar('name');
$email = JRequest::getVar('email');
$password = JRequest::getVar('password');

//This code will call your funcion, then register with your data
$NewUserInfo = CreateNewUser($name, $username, $email, $password, $registerDate);

fonte : http://fititnt.org/codigo/joomla/funcao-criar-novo-usuario-joomla-15.html