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Request #26694 strtotime fails on 'Sun, 21 Dec 2003 20:38:33 +0000 GMT'
Submitted: 2003-12-22 12:46 UTC Modified: 2005-06-20 09:23 UTC
Avg. Score:3.7 ± 0.5
Reproduced:3 of 3 (100.0%)
Same Version:2 (66.7%)
Same OS:1 (33.3%)
From: phpbug at thequod dot de Assigned: derick
Status: Closed Package: Feature/Change Request
PHP Version: 4.3.4 OS: Windows XP
Private report: No CVE-ID:
 [2003-12-22 12:46 UTC] phpbug at thequod dot de
I use strtotime to decode the If-Modified-Since header and just noticed that Firebird puts and offset in front of the "GMT". I don't know if this is RFC conform, but it should be recognized by strtotime(), IMHO.

Reproduce code:
var_dump(strtotime('Sun, 21 Dec 2003 20:38:33 +0000 GMT'));

Expected result:


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 [2003-12-22 13:29 UTC] phpbug at thequod dot de
summary: it fails on
$d = gmdate("r") . ' GMT';
var_dump( strtotime($d) );
 [2003-12-22 16:52 UTC]
Thank you for taking the time to write to us, but this is not
a bug. Please double-check the documentation available at and the instructions on how to report
a bug at

You can either define the timezone by +dddd or by the 3-char identifier of that timezone. Your format isn\'t defined by the syntax - for further readings see

 [2004-04-25 11:39 UTC]
That doesn't mean we can't support it :)
 [2004-08-05 00:21 UTC] joelgphp at gadgetwiz dot com
The "+0000 GMT" format is also used by the Blackberry email client[s]. I've opened a ticket with them to fix the problem; however, because the issue seems to keep coming up, it should be parsed by the strtotime function even if it is not technically compliant.
 [2005-06-20 09:23 UTC]
This bug has been fixed in CVS.

Snapshots of the sources are packaged every three hours; this change
will be in the next snapshot. You can grab the snapshot at
Thank you for the report, and for helping us make PHP better.

Fixed for PHP 5.1.
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