PHP filesize reporting old size

Question

The following code is part of a PHP web-service I\'ve written. It takes some uploaded Base64 data, decodes it, and appends it to a file. This all works fine.

The p

Answer 1

On Linux based systems, data fetched by filesize() is "statcached".

Try calling clearstatcache(); before the filesize call.

Answer 2

PHP stores all file metadata it reads in a cache, so it's likely that the file size is already stored in that cache, and you need to clear it. See clearstatcache and call it before you call filesize.

Answer 3

According to the PHP manual:

The results of this function are cached. See clearstatcache() for more details.

http://us2.php.net/manual/en/function.filesize.php

Basically, you have to clear the stat cache after the file operation:

$fileOut = fopen($filepath.$filename, "ab")
fwrite($fileOut, base64_decode($data));
fflush($fileOut);
fclose($fileOut);

clearstatcache();

$newSize = filesize($filepath.$filename);