<?php function GrabImage($url,$filename="") {   if($url==""):return false;endif;   if($filename=="") {     $ext=strrchr($url,".");     if($ext!=".gif" && $ext!=".jpg"):return false;endif;     $filename=date("dMYHis").$ext;   }   ob_start();   readfile($url);   $img = ob_get_contents();   ob_end_clean();   $size = strlen($img);   $fp2=@fopen($filename, "a");   fwrite($fp2,$img);   fclose($fp2);   return $filename; } $img=GrabImage("http://news.bbc.co.uk/images/_1978837_detector_ap100.jpg",""); if($img):echo '<pre><img src="'.$img.'"></pre>';else:echo "false";endif;      ?> dedecms中的:        if(!empty($saveremoteimg))         {                 $body = stripslashes($body);                 $img_array = array();                 preg_match_all("/(src|SRC)=[\"|'| ]{0,}(http:\/\/(.*)\.(gif|jpg|jpeg|bmp|png))/isU",$body,$img_array);                 $img_array = array_unique($img_array[2]);                 set_time_limit(0);                 $imgUrl = $img_dir."/".strftime("%Y%m%d",time());                 $imgPath = $base_dir.$imgUrl;                 $milliSecond = strftime("%H%M%S",time());                 if(!is_dir($imgPath)) @mkdir($imgPath,0777);                 foreach($img_array as $key =>$value)                 {                         $value = trim($value);                         $get_file = @file_get_contents($value);                         $rndFileName = $imgPath."/".$milliSecond.$key.".".substr($value,-3,3);                         $fileurl = $imgUrl."/".$milliSecond.$key.".".substr($value,-3,3);                         if($get_file)                         {                                 $fp = @fopen($rndFileName,"w");                                 @fwrite($fp,$get_file);                                 @fclose($fp);                         }                         $body = ereg_replace($value,$fileurl,$body);                 }                 $body = addslashes($body);         }