So ändern Sie den Namen der Download-Datei in PHP

$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);
            }