A small php file download instance
/* ===================================================== ======================
$ 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.
If you have any questions, contact the blogger.
========================================================== =================== */
| The code is as follows: |
Copy code |
<? 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 );
} ?> |
Summary
This download instance supports Chinese characters and uft8 encoding at the beginning of the file.
