From: jnoll at prim dot hu
Operating system: Debian GNU/Linux (unstable)
PHP version: 4.3.6
PHP Bug Type: Filesystem function related
Bug description: file write/close doesn't update file size stat cache
Description:
------------
The problem is the following:
1. open a file for writing or appending
2. append a character (or anything) to that file
3. close file
4. get the file size with stat or filesize
ERROR: this will return the OLD size, before writing
If you do a clearstatcache(), the filesize will be the NEW size (the
expected result)
Reproduce code:
---------------
<?
$filename = "/tmp/stattest";
// initialise
if (!file_exists($filename)) {
$f = fopen($filename,"w");
fclose($f);
echo "Reload, please.";
exit;
}
$fs = filesize($filename); $fstat = stat($filename);
echo "START: $fs, ".$fstat['size']."<BR>";
$f = fopen($filename,"a");
fputs($f,"x");
fclose($f);
/**
* bad result: this should be 1 byte more than the previous
* BUT IT IS THE SAME!!!
*/
$fs = filesize($filename); $fstat = stat($filename);
echo "AFTER(BAD): $fs, ".$fstat['size']."<BR>";
// force a clear
clearstatcache();
/**
* good result after clearstatcache (why???)
*/
$fs = filesize($filename); $fstat = stat($filename);
echo "AFTER(GOOD): $fs, ".$fstat['size']."<BR>";
?>
Expected result:
----------------
START: 145, 145
AFTER(BAD): 145, 145
AFTER(GOOD): 146, 146
If AFTER(BAD) is less than AFTER(GOOD) value, that means PHP is buggy.
--
Edit bug report at http://bugs.php.net/?id=28790&edit=1
--
Try a CVS snapshot (php4): http://bugs.php.net/fix.php?id=28790&r=trysnapshot4
Try a CVS snapshot (php5): http://bugs.php.net/fix.php?id=28790&r=trysnapshot5
Fixed in CVS: http://bugs.php.net/fix.php?id=28790&r=fixedcvs
Fixed in release: http://bugs.php.net/fix.php?id=28790&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=28790&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=28790&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=28790&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=28790&r=support
Expected behavior: http://bugs.php.net/fix.php?id=28790&r=notwrong
Not enough info: http://bugs.php.net/fix.php?id=28790&r=notenoughinfo
Submitted twice: http://bugs.php.net/fix.php?id=28790&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=28790&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=28790&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=28790&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=28790&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=28790&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=28790&r=float
