php文件下载并重命名

1.下载本地文件

$file_url = “./本地路径”

 $out_filename = ‘下载后自动保存的名字’;

 if(!file_exists($file_url)) {

     echo "不存在";

 }else{
4000

           header('Accept-Ranges: bytes');

           header('Accept-Length: ' . filesize( $file_url ));

           header('Content-Transfer-Encoding: binary');

           header('Content-type: application/octet-stream');

           header('Content-Disposition: attachment; filename=' . $out_filename);

           header('Content-Type: application/octet-stream; name=' . $out_filename);

           if(is_file($file_url) && is_readable($file_url)){

                $file = fopen($file_url, "r");

                 echo fread($file, filesize($file_url));

                 fclose($file);

            }

2.下载远程文件

$file_ur = ‘远程文件地址’;

$out_filename='下载后自动保存的文件名';

            $file = @fopen($file_url, "r");

            if($file){

                $content="";

                while(!feof($file)){//测试文件指针是否到了文件结束的位置

                    $data=fread($file,1024);

                    $content.=$data;

                }

                fclose($file);

                $filesize = strlen($content);

                header('Accept-Ranges: bytes');

                header('Accept-Length: ' . $filesize);

                header('Content-Transfer-Encoding: binary');

                header('Content-type: application/octet-stream');

                header('Content-Disposition: attachment; filename=' . $out_filename);

                header('Content-Type: application/octet-stream; name=' . $out_filename);

                echo $content;

                die();  

            }else{

                echo "文件不存在";

            }