/**  * 获取CSS中图片地址,并且保存到本地  */ class getInCssImage {            /**           *  图片保存下来          * @param $cssUrl css的url地址          * @param $dir 保存图片的目录          * @return void          */         static public function saveImage($cssUrl, $dir)         {                $content = file_get_contents($cssUrl);               $patterns = '/images(.*).(jpg|gif|png)/'; //正则根据不同地址需要变换             preg_match_all($patterns, $content, $matches);             $imagesUrls = $matches[0];             if (!is_dir($dir))                 mkdir(dirname(__FILE__). '/'. $dir, 0777);             foreach($imagesUrls as $image)             {                    ob_start();                 $imageUrl = "http://www.xxxx.com/".$image; //这个地址填入你想要抓取的地址                 readfile($imageUrl);                 $img  = ob_get_contents();                 ob_end_clean();                 $size = strlen($img);                 $localImage = $dir. strchr($image, '/'); //存到本地的图片地址                 $fp = fopen($localImage, 'a');                 fwrite($fp, $img);                 fclose($fp);             }            }    } $content = getInCssImage::saveImage('/css/css.css', 'image');