/**
* Generates new available username based on email address
*
* @param string $email Email address or preferrd username
* @return string Generated username
*/
public function generateUsername($email)
{
$loginMaxLen = 32;
$email = strtolower($email);
$email = explode('@', $email);
$local = $email[0];
$domain = '';
if (!empty($email[1])) {
$domain = $email[1];
}
// strip bad characters
$local = preg_replace("/[^A-Za-z0-9_\\.]/", '', $local);
$domain = preg_replace("/[^A-Za-z0-9_\\.]/", '', $domain);
// Try just the local part of an address
$login = $local;
// Make sure login username is no longer than max allowed by DB
$login = substr($login, 0, $loginMaxLen);
$logincheck = self::checkusername($login);
if (Helpers\Utility::validlogin($login) && $logincheck['status'] == 'ok') {
return $login;
}
// try full email address with @ replaced with '_'
if (!empty($domain)) {
$login = $local . '_' . $domain;
}
// Make sure login username is no longer than max allowed by DB
$login = substr($login, 0, $loginMaxLen);
$logincheck = self::checkusername($login);
if (Helpers\Utility::validlogin($login) && $logincheck['status'] == 'ok') {
return $login;
}
// generate username by simply appending a sequential number to local part of an address until there is an avilable username available
for ($i = 1; true; $i++) {
// Make sure login username is no longer than max allowed by DB
$numberLen = strlen($i);
$login = substr($local, 0, $loginMaxLen - $numberLen) . $i;
$logincheck = self::checkusername($login);
if (Helpers\Utility::validlogin($login) && $logincheck['status'] == 'ok') {
return $login;
}
}
return false;
}
