Problems with clearstatcache()

[Marker67]

The Keyword search is currently down, so I hope this wasn't answered previously.

Does anyone know if there is an issue with clearstatcache() or am I doing something wrong?

Here is a bit of linear code to illustrate my issue...

$filename = "testfile.txt";

if (! is_file($filename))
{
	echo "<b>The file: $filename does not exist.  Creating it.</b>\n<br><br>";
}

$fh = fopen($filename, "a+") or die ("The file: $filename could not be created or opened.");

$filesize = filesize($filename);
echo "<b>Filesize:</b> $filesize\n<br><br>";

if ($filesize > 0)
{ 
	$readdata = fread($fh, filesize($filename));
	echo "<b>Data before write:</b> $readdata\n<br><br>";
}
	
$writeit = fwrite ($fh, "This is a test.");

clearstatcache();  //filesize() supposedly won't work twice unless you clearstatcache()
rewind($fh);   //two freads won't work unless you rewind the pointer
$filesize = filesize($filename);
echo "<b>Filesize:</b> $filesize\n<br><br>";
$readdata = fread($fh, $filesize);
echo "<b>Data after write:</b> $readdata\n<br><br>";


rewind($fh);
$readdata = fread($fh, 1024);
echo "<b>Data after write with specific read size:</b> $readdata\n<br><br>";

fclose ($fh);

$str = file_get_contents($filename);
echo "<b>This is what is REALLY in the $filename file:</b> ".$str."<br>";

When the file doesn't exist, this is what I get...

The file: testfile.txt does not exist. Creating it.

Filesize: 0

Filesize: 0


Warning: fread() [function.fread]: Length parameter must be greater than 0. in C:\Program Files\Apache Group\Apache2\htdocs\testing\file_io2.php on line 27
Data after write:

Data after write with specific read size: This is a test.

This is the data that is REALLY in the testfile.txt file: This is a test.



When the file does exist, this is what I get...

Filesize: 15

Data before write: This is a test.

Filesize: 15

Data after write: This is a test.

Data after write with specific read size: This is a test.This is a test.

This is what is REALLY in the testfile.txt file: This is a test.This is a test.

 

[DRJ478]

I just copied your code and executed it without any errors on a UNIX type OS. The output is just as expected.

However, then I did the same thing with a Windows XP machine, Apache. Won't work. This seems to be another Windows specific issue.
It is somewhat insufficient - but it seems that Windows will not update the filesize until you actually close the filehandle. I closed the filehandle and it works fine.

 

[Marker67]

Cool. Thanks for the confirmation.