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Bug #15115 strtotime not recognizing 'Sa' as Saturday
Submitted: 2002-01-19 12:24 UTC Modified: 2002-05-25 06:32 UTC
From: tim at x-session dot dynodns dot net Assigned:
Status: Not a bug Package: Date/time related
PHP Version: 4.1.1 OS: Win2000 Server
Private report: No CVE-ID: None
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 [2002-01-19 12:24 UTC] tim at x-session dot dynodns dot net 
What I do is parsing Mail-Headers, especially the 'Date:' header. One mail I parsed had the following 'Date:' header:

Date: Sa, 19 Jan 2002 12:28:51 -1100

strtotime just returns -1 after parsing this string:

<?
  $dheader="Sa, 19 Jan 2002 12:28:51 -1100";
  echo strtotime($dheader); // prints '-1'
?>

when I replace 'Sa' with 'Sat', it returns the correct value:

<?
  $dheader="Sat, 19 Jan 2002 12:28:51 -1100";
  echo strtotime($dheader); // prints '1011482931'
?>

I am in Timezone GMT+1.
Now should I find a workaround to this problem by replacing 'Sa' with 'Sat' for myself (so this is a mailer-problem) or perhaps you should consider this in your implementation (I don't know how often this 'Sa'/'Sat' problem occurs.

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 [2002-01-22 18:39 UTC] tim at x-session dot dynodns dot net 
Today I looked into the sourcecode of the strtotime function and found out that you only search for 3-character abbreviations. I think it's impossible to search for 2-character abbreviations because they wouldn't be unique...

I think this solution also works fine for me:

<?
  $dheader="Sa, 19 Jan 2002 12:28:51 -1100";
  echo strtotime(ltrim(substr($dheader,-strlen($dbheader)+4))); // prints '1011482931'
?>

I just cut away the 2- or 3-character abbreviation and the comma, then I cut away the remaining whitespace at the beginning of the string (if one exists...but it's not necessary to cut it away) and then I do the conversion. That should work fine for every 'Date:' header.
 [2002-05-25 06:32 UTC] derick@php.net 
Not a bug in PHP, 'Sa' is not supposed to work. It's clearly a bug in the mailer.

Derick
 
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