[php-maint] php4 strtotime bug?

[Anthony Tippett]

Before I submit I bug report, I'd like to describe the issue that I'm
having in hopes that you can give me some ideas on debugging it.  This
issue deals with the strtotime function and the differences I'm seeing
between sarge and sid.  Recently, this issue started to occur when using
strtotime in the form of strtotime("-38 years", $timestamp) on stable
(sarge).  On Sarge, strtotime returns -1 however, on sid strtotime
reports the correct time stamp.  I've tried this on 2 Sarge boxes
without luck and am fairly certain that this issue has come about within
the last month. Please let me know if there is anything more I can do to
try and debug this or let me know if I should submit it as a php4 bug.

information:


Here is some code examples and output of what I get on each dist:


Code:

<?php
$a = "2005-01-01";
$b = strtotime($a);
$c = -35;
$c2 = -36;
print "strtotime of $a = $b\n";

$d = strtotime("-$c years", $b);
print "strtotime of $a shifting $c years = $d\n";
print "date of $d = ".date("Y-m-d", $d)."\n";

$d2 = strtotime("-$c2 years", $b);
print "strtotime of $a shifting $c2 years = $d2\n";
print "date of $d2 = ".date("Y-m-d", $d2)."\n";
?>


Sid Output (php version4:4.4.0-2)

strtotime of 2005-01-01 = 1104566400
strtotime of 2005-01-01 shifting -35 years = 28800
date of 28800 = 1970-01-01
strtotime of 2005-01-01 shifting -36 years = -31507200
date of -31507200 = 1969-01-01

Sarge Output(4:4.3.10-16)

strtotime of 2005-01-01 = 1104566400
strtotime of 2005-01-01 shifting -35 years = 28800
date of 28800 = 1970-01-01
strtotime of 2005-01-01 shifting -36 years = -1
date of -1 = 1969-12-31


Also interesting when running the date command on Sarge the date
arithmatic seems to work.  I'm not sure if they use the same libraries.
   
    date --date='-36 years' +'Last month was %Y?'

    Last month was 1969?

-- 
Anthony Tippett - 425.443.3152 - Etomic.NET

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