Download php files (Chinese names supported)

Copy codeThe Code is as follows:
/* ===================================================== ======================
$ FileName is the file name, required
$ FilePath is the file path. Optional. It can be a relative or absolute path.
The path can only consist of English letters and data, and cannot contain Chinese characters.
========================================================== =================== */

<? Php
Header ("Content-type: text/html; charset = UTF-8 ");
If (strlen ($ FileName) <= 3) {echo "Download failed: Your downloaded file information is incorrect"; return ;}
$ FileName = iconv ("UTF-8", "gb2312", $ FileName); // convert the file name format to prevent Chinese garbled characters
// Start to determine the path
If (! Is_null ($ FilePath) & strlen ($ FilePath)> 1 ){

If (substr ($ FilePath,) = '/') {// determine whether the path 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 the path is absolute

$ 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 is not found"; return;

}
/* ===================================================== ============
Send download-related header information
========================================================== =========== */

Header ("Content-type: application/octet-stream ");

Header ("Accept-Ranges: bytes"); // returns the value in bytes.

Header ("Accept-Length: $ FileSize"); // returns the file size.

Header ("Content-Disposition: attachment; filename =". $ FileName); // the pop-up dialog box on the client, with the corresponding file name

/* ===================================================== ============
Start download
========================================================== =========== */
$ 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 );
}
?>