#34471 [Opn->WFx]: fread() allocates length bytes without releasing unneeded
| From: | wez@php.net | Date: | Mon, 12 Sep 2005 01:21:13 +0000 |
| Subject: | #34471 [Opn->WFx]: fread() allocates length bytes without releasing unneeded | ||
| References: | 1 | Groups: | php.bugs |
| Request: | Send a blank email to php-bugs+get-84890@lists.php.net to get a copy of this message | ||
ID: 34471
Updated by: wez@php.net
Reported By: wojtek at wojjie dot com
-Status: Open
+Status: Wont fix
Bug Type: Performance problem
Operating System: Gentoo/Fedora
PHP Version: 5.0.5
New Comment:
That's the way fread() works.
Use stream_get_contents() instead.
Previous Comments:
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[2005-09-12 03:03:14] wojtek at wojjie dot com
Description:
------------
fread() seems to allocate length amount of memory for getting data from
the connection, but does not release it till you do something to
variable. If $dat did have data, and you did:
$dat=$dat.'';
It would then release any unused memory.
Not sure if this is a bug, but I thought I would submit it incase.
Reproduce code:
---------------
<?php
$fp=fsockopen('udp://192.168.0.1', 27015, $errno, $errstr);
stream_set_blocking($fp, false);
$dat=fread($fp, 4096000);
fclose($fp);
$bmem=memory_get_usage();
echo strlen($dat)."\n";
unset($dat);
echo (memory_get_usage()-$bmem)."\n";
?>
Expected result:
----------------
Difference in memory usage should not be so huge as 4095896 bytes.
Actual result:
--------------
-4095896
------------------------------------------------------------------------
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Edit this bug report at http://bugs.php.net/?id=34471&edit=1