用PHP下载文件并且修改文件名

本地下载文件

$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{            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);             } }

跨域下载文件

$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";             }