PHP File Download Code (supports remote file download)

PHP File Download Code (supports remote file download)/* This Article provides two file download codes that support local Server File Download, another one supports downloading files from remote servers to a local device.

Php tutorial File Download Code (supports remote file download)
/*
Two of the three file download codes provided in this article support downloading files from the local server, and the other supports downloading files from the remote server to the local server.
*/

Function download ($ file_dir, $ file_name)
// Parameter description:
// File_dir: directory of the file
// File_name: File Name
{
$ File_dir = chop ($ file_dir); // remove unnecessary spaces in the path
// Obtain the path of the object to be downloaded
If ($ file_dir! = '')
{
$ File_path = $ file_dir;
If (substr ($ file_dir, strlen ($ file_dir)-1, strlen ($ file_dir ))! = '/')
$ File_path. = '/';
$ File_path. = $ file_name;
}
Else
$ File_path = $ file_name;

// Determine whether the object to be downloaded exists
If (! File_exists ($ file_path ))
{
Echo 'Sorry, the file you want to download does not exist. ';
Return false;
}

$ File_size = filesize ($ file_path );
 
Header ("content-type: application/octet-stream ");
Header ("accept-ranges: bytes ");
Header ("accept-length: $ file_size ");
Header ("content-disposition: attachment; filename =". $ file_name );

$ Fp = fopen ($ file_path, "r ");
$ Buffer_size = 1024;
$ Cur_pos = 0;

While (! Feof ($ fp) & $ file_size-$ cur_pos> $ buffer_size)
{
$ Buffer = fread ($ fp, $ buffer_size );
Echo $ buffer;
$ Cur_pos + = $ buffer_size;
}

$ Buffer = fread ($ fp, $ file_size-$ cur_pos );
Echo $ buffer;
Fclose ($ fp );
Return true;

}

?>

<? Php

$ File_name = "info_check.exe ";
$ File_dir = "/public/www/download /";
If (! File_exists ($ file_dir. $ file_name) {// check whether the file exists
Echo "file not found ";
Exit;
} Else {
$ File = fopen ($ file_dir. $ file_name, "r"); // open the file
// Input file tag
Header ("content-type: application/octet-stream ");
Header ("accept-ranges: bytes ");
Header ("accept-length:". filesize ($ file_dir. $ file_name ));
Header ("content-disposition: attachment; filename =". $ file_name );
// Output file content
Echo fread ($ file, filesize ($ file_dir. $ file_name ));
Fclose ($ file );
Exit ;}

?>

<?
// If the file path is http or ftp, the download code is as follows:

$ File_name = "info_check.exe ";
$ File_dir = "http://www.bkjia.com /";
$ File = @ fopen ($ file_dir. $ file_name, "r ");
If (! $ File ){
Echo "file not found ";
} Else {
Header ("content-type: application/octet-stream ");
Header ("content-disposition: attachment; filename =". $ file_name );
While (! Feof ($ file )){
Echo fread ($ file, 50000 );
}
Fclose ($ file );
}

?>