Bug #53064 [Opn->Bgs]: filesize return 0 after is_file

Edit report at http://bugs.php.net/bug.php?id=53064&edit=1 ID: 53064 Updated by: iliaa@php.net Reported by: mraaijmakers at gmail dot com Summary: filesize return 0 after is_file -Status: Open +Status: Bogus Type: Bug Package: Filesystem function related Operating System: Linux Ubuntu PHP Version: 5.2.14 Block user comment: N Private report: N New Comment: Thank you for taking the time to write to us, but this is not a bug. Please double-check the documentation available at http://www.php.net/manual/ and the instructions on how to report a bug at http://bugs.php.net/how-to-report.php Previous Comments: ------------------------------------------------------------------------ [2010-10-15 03:15:15] crrodriguez at opensuse dot org Just for the sake of completeness, other than the already mentioned stale stat cache you are doing it wrong. fwrite does not imply fflush() and fclose() does not imply fsync() (and PHP does not fsync/fdatasync the file on close or provide direct functionality to do so unfortunately) ------------------------------------------------------------------------ [2010-10-14 18:12:19] cataphract@php.net read: negligible ------------------------------------------------------------------------ [2010-10-14 18:11:29] cataphract@php.net That's just stale stat cache. This will work: <?php $filename = dirname(__FILE__) . '/test.txt'; $fh = fopen($filename, 'w+'); $isFile = is_file($filename); fwrite($fh, 'some data goes here!'); fclose($fh); clearstatcache(false, $filename); var_dump($isFile, file_get_contents($filename), filesize($filename)); I'm not closing because maybe there's a way to invalidate the cache for that file with a negligent performance penalty. ------------------------------------------------------------------------ [2010-10-14 08:38:22] mraaijmakers at gmail dot com Description: ------------ When using is_file() on a file which is open via fopen(), the filesize() function returns 0, even after fclose() is called; see test script. Test script: --------------- $filename = dirname(__FILE__) . '/test.txt'; $fh = fopen($filename, 'w+'); $isFile = is_file($filename); fwrite($fh, 'some data goes here!'); fclose($fh); var_dump($isFile, file_get_contents($filename), filesize($filename)); Expected result: ---------------- boolean true string 'some data goes here!' (length=20) int 20 Actual result: -------------- boolean true string 'some data goes here!' (length=20) int 0 ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/bug.php?id=53064&edit=1