This question has been answered by whitebyte. See the first response.
<?php $profile = $hook->getValue('register.profile'); $extended = $profile->get('extended'); $extended['registerdate'] = date('d-m-y'); $profile->set('extended', $extended); if ($profile->save()) { return true; } else { $modx->log(modX::LOG_LEVEL_ERROR, '[setRegisterDate]: failed to save user profile!'); return false; }
$extended['registerdate'] = time();
$extended['registerdate'] = time();
<?php $profile = $hook->getValue('register.profile'); $extended = $profile->get('extended'); $extended['registertimestamp'] = time(); $profile->set('extended', $extended); if ($profile->save()) { return true; } else { $modx->log(modX::LOG_LEVEL_ERROR, '[setRegisterDate]: failed to save user profile!'); return false; }