#31763 [NEW]: Memory leak on file dowloading when using sessions?
From: adyzah at hotmail dot com
Operating system: Linux
PHP version: 4.3.10
PHP Bug Type: Apache related
Bug description: Memory leak on file dowloading when using sessions?
Description:
------------
I am testing the following code that pushes a file to the browser
(Linux + Apache 1.3 + PHP 4.3.10 but tested also under several other
configs)
!!!!!!
Try it with a BIG test1.zip (e.g. 100M in size)
Try it with wget http://server/test.php or a browser but the
result is
more accurate when using wget since in browsers could work if you already
had a succesfull download of a smaller file.
!!!!!!
What i discovered is that if i keep the 2 session initialisation
functions
the script will work ONLY if the allocated memory in php.ini is greater
than the size
of the tested file. If i remove the session functions the script works
fine
even if the test1.zip file is very big (hundreds of Megs)
Reproduce code:
---------------
<?php
session_save_path('/tmp');
session_start();
$sFileName = 'test1.zip';
$sFileDir = '/var/www/html/';
header("Content-Type: application/octet-stream");
header("Content-Disposition: attachment;filename=\"" . $sFileName .
"\"");
header("Content-Length: " . filesize($sFileDir . $sFileName));
header('Pragma: cache');
header('Cache-Control: public, must-revalidate, max-age=0');
header('Connection: close');
header('Expires: ' . date('r', time()+60*60));
header('Last-Modified: ' . date('r', time()));
$oFp = fopen($sFileDir . $sFileName, "rb");
$iReadBufferSize = 512;
while (!feof($oFp)) {
echo fread ($oFp, $iReadBufferSize);
}
fclose ($oFp);
exit;
?>
Expected result:
----------------
The file should dowload via a browser or via wget
Actual result:
--------------
tail from apache error_log:
Allowed memory size of 12582912 bytes exhausted (tried to allocate 10240
bytes)
--
Edit bug report at http://bugs.php.net/?id=31763&edit=1
--
Try a CVS snapshot (php4): http://bugs.php.net/fix.php?id=31763&r=trysnapshot4
Try a CVS snapshot (php5.0): http://bugs.php.net/fix.php?id=31763&r=trysnapshot50
Try a CVS snapshot (php5.1): http://bugs.php.net/fix.php?id=31763&r=trysnapshot51
Fixed in CVS: http://bugs.php.net/fix.php?id=31763&r=fixedcvs
Fixed in release: http://bugs.php.net/fix.php?id=31763&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=31763&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=31763&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=31763&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=31763&r=support
Expected behavior: http://bugs.php.net/fix.php?id=31763&r=notwrong
Not enough info: http://bugs.php.net/fix.php?id=31763&r=notenoughinfo
Submitted twice: http://bugs.php.net/fix.php?id=31763&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=31763&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=31763&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=31763&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=31763&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=31763&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=31763&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=31763&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=31763&r=mysqlcfg
Thread (6 messages)
- adyzah at hotmail dot com