{dede:field.content runphp="yes"}  
                    $str = preg_replace("/^s+/", "", html2text(@me));  
                    if( !empty($str)  ){  
                        @me = '<div class="content">'.@me.'</div>';  
                    }else{  
                        @me = '';     
                    }  
{/dede:field.content}