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嘿,我有下面的代碼來下載一個大文件,但下載確實停止,每次不完成下載下載不起作用
function download($file)
{
include('logger.php5');
$log = new Logging();
$log->lfile('download.log');
ini_set('max_execution_time', 86400);
//header('Location: '.$file);
$filesize = filesize($file);
$filename = pathinfo($file, PATHINFO_BASENAME);
$filext = pathinfo($file, PATHINFO_EXTENSION);
$mime = include('mime.php5');
$log->lwrite(ini_get('max_execution_time'));
$log->lwrite(sprintf('%s %s %s %s', $filename, $filext, $mime[$filext], human_filesize($filesize)));
$log->lclose();
@ob_end_clean();
session_write_close();
header("Content-Description: File Transfer");
header("Content-Type: ".$mime[$filext]);
header("Content-Disposition: ".
(!strpos($HTTP_USER_AGENT,"MSIE 5.5")?"attachment; ":"").
"filename=".$filename);
header("Content-Transfer-Encoding: binary");
header("Content-Length: ".$filesize);
header("Cache-Control: must-revalidate, post-check=0, pre-check=0");
header("Cache-Control: public");
header('Pragma: public');
header('Expires: 0');
$done = readfile_chunked($file);
}
function readfile_chunked($filename,$retbytes=true) {
$chunksize = 1*(1024*1024); // how many bytes per chunk
$buffer = '';
$cnt =0;
// $handle = fopen($filename, 'rb');
$handle = fopen($filename, 'rb');
if ($handle === false) {
return false;
}
while (!feof($handle)) {
$buffer = fread($handle, $chunksize);
echo $buffer;
ob_flush();
flush();
if ($retbytes) {
$cnt += strlen($buffer);
}
}
$status = fclose($handle);
if ($retbytes && $status) {
return $cnt; // return num. bytes delivered like readfile() does.
}
return $status;
}
我每次調用腳本下載啓動,但後停止400MB,文件本身大778MB。
有人可以看到代碼有問題嗎?
UPDATE
嘗試後登錄的readfile_chunked
返回值的感覺就像劇本被採空不下載本身。因爲我不能在readfile_chunked
調用後獲得日誌條目。
所有頭文件被設置在'下載'功能外面只是安全的東西來識別正確的文件 –
是啊正確的頭文件被髮送。 –
當你說下載停止,你的意思是客戶端只收到400MB?或者你的意思是'readfile_chunked'函數返回一個400MB的計數?或兩者? –