Edit report at https://bugs.php.net/bug.php?id=54758&edit=1
ID: 54758
Comment by: clicky at erebot dot net
Reported by: noodleyman at gmail dot com
Summary: GetSize() returns negative values for large file
sizes
Status: Open
Type: Bug
Package: Directory function related
Operating System: Windows Server 2008
PHP Version: 5.3.6
Block user comment: N
Private report: N
New Comment:
This is a duplicate of bug #27792.
Short answer is: PHP does not support large files (>= 2GB) as of yet.
Previous Comments:
------------------------------------------------------------------------
[2011-05-17 11:21:38] noodleyman at gmail dot com
now using these functions to get a work around.
function dos_filesize($fn) {
if (is_file($fn))
return exec('FOR %A IN ("'.$fn.'") DO @ECHO %~zA');
else
return '0';
}
function dirSize($directory) {
$size = 0;
foreach(new RecursiveIteratorIterator(new
RecursiveDirectoryIterator($directory)) as $file){
$size+=dos_filesize($file);
}
return $size;
}
------------------------------------------------------------------------
[2011-05-17 10:14:14] noodleyman at gmail dot com
the filesize() function also returns the same results as GetSize() for large
files.
------------------------------------------------------------------------
[2011-05-17 10:11:35] noodleyman at gmail dot com
Just confirming that I have also tested this using the code in the example page
as linked to below and here are the results
<?php
$iterator = new DirectoryIterator(dirname(__FILE__));
foreach ($iterator as $fileinfo) {
if ($fileinfo->isFile()) {
echo $fileinfo->getFilename() . " " . $fileinfo->getSize() . "\n";
}
}
?>
on the same file, this returns a result of "-79538816"
------------------------------------------------------------------------
[2011-05-16 22:02:11] noodleyman at gmail dot com
just realised I typed the wrong function name in the description by mistake. it
should read "When using GetSize()" not "When using GetFile()"
------------------------------------------------------------------------
[2011-05-16 21:46:57] noodleyman at gmail dot com
Description:
------------
When using GetFile() as documented
http://php.net/manual/en/directoryiterator.getsize.php if you run the function
on a large file you get negative values which are wrong. I haven't got the
exact file size that this happens at, but I have tested with files of 7GB and
over, and always get the same result. tested using the function in the test
script.
Test script:
---------------
function dirSize($directory) {
$size = 0;
foreach(new RecursiveIteratorIterator(new
RecursiveDirectoryIterator($directory)) as $file){
$size+=$file->getSize();
}
return $size;
}
Then ran function using input value of a directory with a single file of
8,510,398,464 bytes in size.
Expected result:
----------------
8310936 KB
Actual result:
--------------
-77674.63
------------------------------------------------------------------------
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Edit this bug report at https://bugs.php.net/bug.php?id=54758&edit=1
