The downloading problem is that the downloading of small files is normal. if the downloading of a file larger than MB is beyond MB, the progress bar will not go away. what is wrong with the code? At last, this post was edited by bxline from 2012-12-1706: 31: 43. I used the following code. I tried it twice and downloaded it to MB, one download to 129 download problem, small files can be downloaded normally, download files larger than MB, when the progress bar is outside MB, the progress bar will not go, where the code is wrong?
At the end of this post, I edited the following code by bxline at 06:31:43 on. I tried to download the code to 145M 5 m twice. once downloaded to 129M, I did not leave.
What's going on? The downloading of small files is normal, that is, files larger than MB are abnormal.
Below is the code: I am 03 + FASTCGI, not apache, so some lines in the code are commented out.
If (file_exists ($ filename )){
$ Mtime = ($ mtime = filemtime ($ filename ))? $ Mtime: gmtime ();
$ Size = intval (sprintf ("% u", filesize ($ filename )));
# If (intval ($ size + 1)> return_bytes (ini_get ('memory _ limit ') & intval ($ size * 1.5) <= 1073741824 ){
# Ini_set ('memory _ limit ', intval ($ size * 1.5 ));
#}
// @ Apache_setenv ('no-gzip ', 1 );
// @ Ini_set ('zlib. output_compression ', 0 );
Header ('content-Description: File Transfer ');
Header ('content-Type: application/force-download ');
Header ('content-Type: application/octet-stream ');
Header ('content-Disposition: attachment; filename = '. basename ($ filename ));
Header ('content-Transfer-Encoding: binary ');
Header ('expires: 0 ');
Header ('cache-Control: must-revalidate, post-check = 0, pre-check = 0 ');
Header ('pragma: public ');
Header ("Content-Length:". $ size );
Set_time_limit (300 );
$ Chunksize = 1*(1024*1024 );
// Ob_clean ();
// Flush ();
If ($ size> $ chunksize ){
$ Handle = fopen ($ filename, 'RB ');
$ Buffer = '';
While (! Feof ($ handle )){
$ Buffer = fread ($ handle, $ chunksize );
Echo $ buffer;
Ob_flush ();
Flush ();
}
Fclose ($ handle );
} Else {
Ob_flush ();
Flush ();
Readfile ($ filename );
}
Exit;
}
------ Solution --------------------
Echo 100*1024/300;
341 K/s
That is, the average bandwidth is more than 3 MB.
Your download code does not have the resumable Upload capability. Once a transmission error occurs, it can be terminated.
------ Solution --------------------
I should have written it.
Function down($file){
IF(!$file Or !File_Exists($file) Or !Is_Readable($file)) {Return False;}
IF($f = atr($file)) {
Header("Content-Length:{$f['size']}");
Header('Content-Description:File Transfer');
Header('Content-Transfer-Encoding:binary');
Header('Expires:0');
Header('Cache-Control:must-revalidate');
Header('Pragma:public');
IF(Function_exists("mime_content_type")) {
Header("Content-Type: ".mime_content_type($f['name']));
}Else{
Header("Content-Type: application/octet-stream");
