大文件有200多M，只下載了200K就提示下載完成，且不報(bào)錯。
原因是PHP內(nèi)存有限制，需要改為按塊下載，就是把大文件切塊后逐塊下載。
if (file_exists($file)) { if (FALSE!== ($handler = fopen($file, 'r'))) { header('Content-Description: File Transfer'); header('Content-Type: application/octet-stream'); header('Content-Disposition: attachment; filename='.basename($file)); header('Content-Transfer-Encoding: chunked'); //changed to chunked header('Expires: 0'); header('Cache-Control: must-revalidate, post-check=0, pre-check=0'); header('Pragma: public'); //header('Content-Length: ' . filesize($file)); //Remove //Send the content in chunks while(false !== ($chunk = fread($handler,4096))) { echo $chunk; } } exit; } echo "<h1>Content error</h1><p>The file does not exist!</p>";