Sample code for php to implement file download and support Chinese file names

 /*----------------
 * $FileName is the file name, must be passed
 * $FilePath is the file path .Optional, it can be a relative path or an absolute path
 * @The path can only be composed of English and data, not Chinese
 * @Edited by: bbs.it-home.org
 --------- ---------*/

 header("Content-type: text/html;charset=utf-8");
 if(strlen($FileName)<=3){echo "Download failed : The file information you downloaded is incorrect";return;}
 $FileName=iconv("utf-8","gb2312",$FileName);//Convert the file name format to prevent Chinese garbled characters
 //Start Determine the path
 if(!is_null($FilePath)&&strlen($FilePath)>1){
 if(substr($FilePath,0,1)=='/'){//Determine whether it is an absolute path
 $FilePath =$_SERVER['DOCUMENT_ROOT'].$FilePath;
 }
 if(substr($FilePath,-1)!="/"){//Check whether the end is /
 $FilePath=$FilePath.'/' ;
 }
 if(is_numeric(strpos($FilePath,":"))){//Check whether it is an absolute path
 $FilePath=str_replace("/","",$FilePath);
 }
 }elseif( strlen($FilePath)==1&&$FilePath!="/"){
 $FilePath=$FilePath."/";
 }else{
 $FilePath="";
 }
 if(!file_exists($FilePath. $FileName)){
 echo "Download failed: The file to be downloaded was not found"; return;
 }
 /*-------------
 Send download related header information
 -- -----------=*/
 header("Content-type: application/octet-stream");
 header("Accept-Ranges: bytes");//Return according to byte size
 header("Accept-Length: $FileSize");//Return the file size
 header("Content-Disposition: attachment; filename=".$FileName);//The client's pop-up dialog box here, the corresponding file name< /p>
 /*-------------
 Start downloading related
 -------------=*/
$FileSize=filesize( $FilePath.$FileName);
 $File=fopen($FilePath.$FileName,"r");//Open the file
 $FileBuff=512;
 while($FileSize>=0){
 $FileSize-=$ FileBuff;
 echo fread($File,$FileBuff);
 }
 fclose($File);
 }
?>