Bug #52102 [Com]: PHP5 under Apache2 on 64 bit system is not completely 64 bit

Edit report at http://bugs.php.net/bug.php?id=52102&edit=1 ID: 52102 Comment by: geissert@php.net Reported by: peter at ubuntu dot com Summary: PHP5 under Apache2 on 64 bit system is not completely 64 bit Status: Duplicate Type: Bug Package: Apache related Operating System: Ubuntu 10.04 PHP Version: 5.3.2 Block user comment: N Private report: N New Comment: Adam, this bug report is related to sending files to the client and doesn't seem to be related to variable types. I don't think this is a dup of #44522. The interesting stuff can be found at https://bugs.launchpad.net/ubuntu/+source/php5/+bug/564920 (message #18 and followups) Previous Comments: ------------------------------------------------------------------------ [2010-06-17 04:44:11] aharvey@php.net Dupe of bug #44522. ------------------------------------------------------------------------ [2010-06-16 19:39:56] peter at ubuntu dot com Description: ------------ Something in PHP5 running under apache2 under Ubuntu 9.10 is not fully 64 bit aware on a 64 bit system. PHP scripts run under Apache correctly under Ubuntu 8.04 (PHP 5.2.4). Under Ubuntu 9.10 (PHP 5.2.10) and 10.04 (PHP 5.3.2), some place a value is being treated as 32 bits on a 64 bit system and is wrapping instead of using full 64 bits. Related to sending large data (> 4G) in response to an HTTP post request. Did not test with Ubuntu 8.10 or 9.04 - both PHP 5.2.6. What happens: Data aborts based on wrap. Calculated number of bytes to be served are correct (>4G) as listed in the HTTP length header. Actual bytes served are (size) && 0xFFFFFFFF instead of (size) && 0xFFFFFFFFFFFFFFFF on 64 bit system. Most of data is being transfered via fpassthru($openFileHandle) call, providing >4G bytes of data. Test script: --------------- <?php header("Connection: close"); // NOTE: File test.txt needs to be more than 2^32 bytes. Pick a large file, over 0x100000000 bytes // in size, such as http://cdimage.debian.org/debian-cd/5.0.4/amd64/iso-dvd/debian-504-amd64-DVD-1.iso $name = "/var/www/test.txt"; $fs = filesize($name); $fp = fopen($name,'rb'); $httpByteLen = $fs; header("Connection: close"); header("Content-Type: application/octet-stream"); header("Content-Length: " . $httpByteLen); header("HTTP/1.1 200 OK"); set_time_limit(0); fpassthru($fp); exit; ?> Expected result: ---------------- The entire ISO file to be downloaded. Actual result: -------------- Tested using the test script (attached), and using the suggested debian dvd .iso image as the input file. The ISO is 4,697,126,912 bytes. Download socket is closed after 402,159,616 bytes, which again is the file size & 0xFFFFFFFF. ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/bug.php?id=52102&edit=1