source/Application/Model/Article.php
protected function _isImageField($sFieldName)
    {
        return (stristr($sFieldName, '_oxthumb') || stristr($sFieldName, '_oxicon') || stristr(
            $sFieldName,
            '_oxzoom'
        ) || stristr($sFieldName, '_oxpic'));
    }
protected function _isImageField($sFieldName)
    {
        return (stristr($sFieldName, '_oxthumb') || stristr($sFieldName, '_oxicon') || stristr(
            $sFieldName,
            '_oxzoom'
        ) || stristr($sFieldName, '_oxpic'));
    }
protected function _isImageField ( $ sFieldName ) { return ( stristr ( $ sFieldName , '_oxthumb' ) || stristr ( $ sFieldName , '_oxicon' ) || stristr ( $ sFieldName , '_oxzoom' ) || stristr ( $ sFieldName , '_oxpic' ) ) ; }
Detects if field is an image field by field name

@param string $sFieldName Field name

@return bool.
Detects if field is an image field by field name