Bug #61271 [Opn->Nab]: filemtime() returns invalid timestamp when using SplFileObject

From: Date: Sun, 04 Mar 2012 15:16:04 +0000
Subject: Bug #61271 [Opn->Nab]: filemtime() returns invalid timestamp when using SplFileObject
References: 1  Groups: php.bugs 
Request: Send a blank email to php-bugs+get-168087@lists.php.net to get a copy of this message 
Edit report at https://bugs.php.net/bug.php?id=61271&edit=1

 ID:                 61271
 Updated by:         rasmus@php.net
 Reported by:        suinyeze at gmail dot com
 Summary:            filemtime() returns invalid timestamp when using
                     SplFileObject
-Status:             Open
+Status:             Not a bug
 Type:               Bug
 Package:            SPL related
 Operating System:   MacOSX 10.7.3
 PHP Version:        5.4.0
 Block user comment: N
 Private report:     N

 New Comment:

PHP uses an internal stat cache for performance reasons. SplFileObject will stat 
the file and cache the results. If you need to modify the file's stat data and 
for some reason read it back in the same request (which is pretty rare) then you 
need to clear the stat cache with:

clearstatcache(false,$file);

Put that after your touch() call there and you will get your expected result.


Previous Comments:
------------------------------------------------------------------------
[2012-03-04 09:48:57] suinyeze at gmail dot com

Description:
------------
Once a SplFileObject instance was created​​, filemtime() does not return the latest 
modification time of the file.

Test script:
---------------
filemtime.php
<?php

$file = '/tmp/test';
touch($file);
$fileObject = new SplFileObject($file); // If comment out this line, it works well.
touch($file, time() + 1);

echo 'time():                      ' . date('Y-m-d H:i:s', time()) . PHP_EOL;
echo 'time() + 1:                  ' . date('Y-m-d H:i:s', time() + 1) .
PHP_EOL;
echo 'filemtime($file):            ' . date('Y-m-d H:i:s', filemtime($file)) .
PHP_EOL;
echo 'filemtime($file)@subprocess: ';
passthru('php -r "echo date(\'Y-m-d H:i:s\', filemtime(\'/tmp/test\'))
. PHP_EOL;"');


Expected result:
----------------
$ php filemtime.php 
time():                      2012-03-04 18:37:01
time() + 1:                  2012-03-04 18:37:02
filemtime($file):            2012-03-04 18:37:02
filemtime($file)@subprocess: 2012-03-04 18:37:02

Actual result:
--------------
$ php filemtime.php 
time():                      2012-03-04 18:37:01
time() + 1:                  2012-03-04 18:37:02
filemtime($file):            2012-03-04 18:37:01
filemtime($file)@subprocess: 2012-03-04 18:37:02


------------------------------------------------------------------------



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Edit this bug report at https://bugs.php.net/bug.php?id=61271&edit=1

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