保存远程图片到本地服务器几种方法[php,asp]

function get_file($url,$folder){   
set_time_limit (24 * 60 * 60);   
  
$destination_folder = $folder?$folder.'/':'';//文件下载保存目录   
    
  
$newfname = $destination_folder . basename($url);   
$file = fopen ($url, "rb");   
if ($file) {   
$newf = fopen ($newfname, "wb");   
if ($newf)   
while(!feof($file)) {   
fwrite($newf, fread($file, 1024 * 8 ), 1024 * 8 );   
}   
}   
if ($file) {   
fclose($file);   
}   
if ($newf) {   
fclose($newf);   
}   
}   

//php教程 方法二

// $url 是远程图片的完整url地址，不能为空。
// $filename 是可选变量: 如果为空，本地文件名将基于时间和日期
// 自动生成. 
 

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;
}
 
$img=grabimage("yun_qi_img/000003.png","www.111cn.net.png");
if($img):echo '<pre><img src="'.$img.'"></pre>';
else:echo "false";
endif;

//fopen下载远程文件的函数：传入远程url和需要存储下载文件的文件夹名，结尾无需反斜线

//asp教程保存远程服务器图片
/*

sub saveremotefile(localfilename,remotefileurl)
dim ads,retrieval,getremotedata
set retrieval = server.createobject("microsoft.xmlhttp")
with retrieval
.open "get", remotefileurl, false, "", ""
.send
getremotedata = .responsebody
end with
set retrieval = nothing
set ads = server.createobject("adodb.stream")
with ads
.type = 1
.open
.write getremotedata
.savetofile localfilename,2
.cancel()
.close()
end with
set ads=nothing
end sub

remotefileurl = "" '获取远程图片
fileext = right(remotefileurl,4) '获取远程图片的格式

'随机文件名称
randomize
rannum = int(9*10^3*rnd)+10^3
dtnow = now()
filename = year(dtnow) & right("0" & month(dtnow),2) & right("0" & day(dtnow),2) & right("0" & hour(dtnow),2) & right("0" & minute(dtnow),2) & right("0" & second(dtnow),2) & rannum & fileext

localfilename = "./" '保存本地路径
if right(localfilename,1) <> "/" then localfilename = localfilename & "/"
savefile = server.mappath(localfilename & filename)
saveremotefile savefile,remotefileurl '保存远程图片
response.write "保存成功，<a href=""" & localfilename & filename & """ target=""_blank"">点击查看图片文件....</a>"

 

*/

//方法三
/*保存图片函数*/       
      

  function saveimage($url) //保存url中的图片文件到本地的imges文件夹下，名称不变,返回图片的路径和名称       
        {       
            if($url==""):return false;endif;       
            /*保存路径*/      
            $path="movieimg/".date('y-m-d'); //保存路径       
            if(!file_exists($path))       
            {       
            //检查是否有该文件夹，如果没有就创建，并给予最高权限       
            mkdir("$path", 0700);       
            }       
      
            $name=strrchr($url,"/");       
            $filename=$path.$name;       
      
            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;       
        }

?>