OEModule\OphCoMessaging\controllers\DefaultController::actionUserFind PHP Method

    public function actionUserFind()
    {
        $res = array();
        if (\Yii::app()->request->isAjaxRequest && !empty($_REQUEST['search'])) {
            $criteria = new \CDbCriteria();
            $criteria->compare('LOWER(username)', strtolower($_REQUEST['search']), true, 'OR');
            $criteria->compare('LOWER(first_name)', strtolower($_REQUEST['search']), true, 'OR');
            $criteria->compare('LOWER(last_name)', strtolower($_REQUEST['search']), true, 'OR');
            $words = explode(' ', $_REQUEST['search']);
            if (count($words) > 1) {
                // possibly slightly verbose approach to checking first and last name combinations
                // for searches
                $first_criteria = new \CDbCriteria();
                $first_criteria->compare('LOWER(first_name)', strtolower($words[0]), true);
                $first_criteria->compare('LOWER(last_name)', strtolower(implode(' ', array_slice($words, 1, count($words) - 1))), true);
                $last_criteria = new \CDbCriteria();
                $last_criteria->compare('LOWER(first_name)', strtolower($words[count($words) - 1]), true);
                $last_criteria->compare('LOWER(last_name)', strtolower(implode(' ', array_slice($words, 0, count($words) - 2))), true);
                $first_criteria->mergeWith($last_criteria, 'OR');
                $criteria->mergeWith($first_criteria, 'OR');
            }
            foreach (\User::model()->findAll($criteria) as $user) {
                $res[] = array('id' => $user->id, 'label' => $user->getFullNameAndTitle(), 'value' => $user->getFullName(), 'username' => $user->username);
            }
        }
        echo \CJSON::encode($res);
    }