function ClearHtml($content) 
{      
                              $content = preg_replace("/<div[^>]*>/i", "", $content);
                         $content = preg_replace("/<\/div>/i", "", $content);
                $content = preg_replace("/<!--[^>]*-->/i", "", $content);//注释内容    
                $content = preg_replace("/style=.+?['|\"]/i",'',$content);//去除样式      
                $content = preg_replace("/class=.+?['|\"]/i",'',$content);//去除样式      
                $content = preg_replace("/id=.+?['|\"]/i",'',$content);//去除样式         
                $content = preg_replace("/lang=.+?['|\"]/i",'',$content);//去除样式          
                $content = preg_replace("/width=.+?['|\"]/i",'',$content);//去除样式       
                $content = preg_replace("/height=.+?['|\"]/i",'',$content);//去除样式       
                $content = preg_replace("/border=.+?['|\"]/i",'',$content);//去除样式       
                $content = preg_replace("/face=.+?['|\"]/i",'',$content);//去除样式       
                $content = preg_replace("/title=.+?['|\"]/i",'',$content);//去除样式       
                $content = preg_replace("/face=.+?['|\"]/",'',$content);//去除样式只允许小写正则匹配没有带 i 参数    
                return $content; }