#29801 [Opn->Csd]: Using readfile() to send large files causes PHP to hang

ID: 29801 Updated by: iliaa@php.net Reported By: WPinegar at healthtech dot net -Status: Open +Status: Closed Bug Type: Reproducible crash Operating System: Windows Server 2003 PHP Version: 5.0.1 New Comment: This bug has been fixed in CVS. Snapshots of the sources are packaged every three hours; this change will be in the next snapshot. You can grab the snapshot at http://snaps.php.net/. Thank you for the report, and for helping us make PHP better. Previous Comments: ------------------------------------------------------------------------ [2004-09-13 13:43:19] thomas at mbox371 dot swipnet dot se the problem exists in php 4.3.8 as well. ------------------------------------------------------------------------ [2004-08-24 20:14:31] thomas at mbox371 dot swipnet dot se latest apache2, Windows 2000 server, php 5.0.0/5.0.1/5.0.2-cvs.. same problem with all these configurations. When streaming files > 5mb thru php there is timeouts. Also, it seems not to work to stream these files over a slower connections (0.5mbit) at all (stops after a few seconds) when it works better on a 100mbit lan. ------------------------------------------------------------------------ [2004-08-23 19:47:40] WPinegar at healthtech dot net Description: ------------ Attempting to use readfile() to send large (over 250MB) binary objects causes PHP 5.0.1 to hang or the web server to send a 302 error. Reverting back to PHP 4.3.8 resolves the issue. Using fopen() and fpassthru() only makes the issue worse. We are using IIS 6 and the PHP ISAPI script engine. Reproduce code: --------------- header("Content-Type: application/force-download"); header("Content-Type: application/octet-stream"); header("Content-Type: application/download"); header("Content-Disposition: attachment; filename=".basename($filename).";"); header("Content-Transfer-Encoding: binary"); header("Content-Length: ".filesize($filename)); readfile("$filename"); exit(); Expected result: ---------------- PHP 5 has an issue with sending large binary files. This should be resolved. ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=29801&edit=1