src/Contao/View/Contao2BackendView/Widget/FileTree.php
public function __isset($strKey)
    {
        switch ($strKey) {
            case 'subTemplate':
                return isset($this->subTemplate);

            case 'thumbnailHeight':
                return isset($this->thumbnailHeight);

            case 'thumbnailWidth':
                return isset($this->thumbnailWidth);

            case 'placeholderImage':
                return isset($this->placeholderImage);

            default:
                return parent::__get($strKey);
        }
    }
public function __isset($strKey)
    {
        switch ($strKey) {
            case 'subTemplate':
                return isset($this->subTemplate);

            case 'thumbnailHeight':
                return isset($this->thumbnailHeight);

            case 'thumbnailWidth':
                return isset($this->thumbnailWidth);

            case 'placeholderImage':
                return isset($this->placeholderImage);

            default:
                return parent::__get($strKey);
        }
    }
public function __isset ( $ strKey ) { switch ( $ strKey ) { case 'subTemplate' : return isset ( $ this -> subTemplate ) ; case 'thumbnailHeight' : return isset ( $ this -> thumbnailHeight ) ; case 'thumbnailWidth' : return isset ( $ this -> thumbnailWidth ) ; case 'placeholderImage' : return isset ( $ this -> placeholderImage ) ; default : return parent :: __get ( $ strKey ) ; } }
Check whether an object property exists

@param string $strKey The property name.

@return boolean True if the property exists
Check whether an object property exists