From: mikeb at tracersinfo dot com
Operating system: Win32 (XP2) and Linux
PHP version: 5.1.2
PHP Bug Type: Date/time related
Bug description: strtotime unconditional false return on now <= 0
Description:
------------
Despite recent modifications to the date functions that now allow negative
timestamps in both of my environments (Win32 and Linux) [THANK YOU, btw!],
strtotime() returns false any time the "now" parameter evaluates to 0 or
less, even when it clearly demonstrates it can perform the calculation
requested and the date/time in question is within reasonable bounds.
Reproduce code:
---------------
<?php
$a["mktime(1, 2, 3, 4, 5, 1967)"] = mktime(1, 2, 3, 4, 5, 1967);
$a["strtotime('-10 years', 0)"] = strtotime('-10 years', 0);
$a["strtotime('-10 years', 1)"] = strtotime('-10 years', 1);
$a["strtotime('+10 years', 0)"] = strtotime('+10 years', 0);
$a["strtotime('+10 years', 1)"] = strtotime('+10 years', 1);
$a["gmmktime(0, 0, 0, 1, 1, 1970)"] = gmmktime(0, 0, 0, 1, 1, 1970);
$a["strtotime('-10 years', gmmktime(0, 0, 0, 1, 1, 1970))"] =
strtotime('-10 years', gmmktime(0, 0, 0, 1, 1, 1970));
$a["strtotime('12/31/1969 19:00:00 -10 years')"] = strtotime('12/31/1969
19:00:00 -10 years');
$a["strtotime('+10 years', gmmktime(0, 0, 0, 1, 1, 1965))"] =
strtotime('+10 years', gmmktime(0, 0, 0, 1, 1, 1965));
$a["strtotime('12/31/1964 19:00:00 +10 years')"] = strtotime('12/31/1964
19:00:00 +10 years');
var_dump($a);
?>
Expected result:
----------------
array(10) {
["mktime(1, 2, 3, 4, 5, 1967)"]=>
int(-86551077)
["strtotime('-10 years', 0)"]=>
int(-315619200) <------
["strtotime('-10 years', 1)"]=>
int(-315619199)
["strtotime('+10 years', 0)"]=>
int(315532800) <-------
["strtotime('+10 years', 1)"]=>
int(315532801)
["gmmktime(0, 0, 0, 1, 1, 1970)"]=>
int(0)
["strtotime('-10 years', gmmktime(0, 0, 0, 1, 1, 1970))"]=>
int(-315619200) <------
["strtotime('12/31/1969 19:00:00 -10 years')"]=>
int(-315619200)
["strtotime('+10 years', gmmktime(0, 0, 0, 1, 1, 1965))"]=>
int(157766400) <------
["strtotime('12/31/1964 19:00:00 +10 years')"]=>
int(157766400)
}
Actual result:
--------------
array(10) {
["mktime(1, 2, 3, 4, 5, 1967)"]=>
int(-86551077)
["strtotime('-10 years', 0)"]=>
bool(false) <------
["strtotime('-10 years', 1)"]=>
int(-315619199)
["strtotime('+10 years', 0)"]=>
bool(false) <------
["strtotime('+10 years', 1)"]=>
int(315532801)
["gmmktime(0, 0, 0, 1, 1, 1970)"]=>
int(0)
["strtotime('-10 years', gmmktime(0, 0, 0, 1, 1, 1970))"]=>
bool(false) <------
["strtotime('12/31/1969 19:00:00 -10 years')"]=>
int(-315619200)
["strtotime('+10 years', gmmktime(0, 0, 0, 1, 1, 1965))"]=>
bool(false) <------
["strtotime('12/31/1964 19:00:00 +10 years')"]=>
int(157766400)
}
--
Edit bug report at http://bugs.php.net/?id=36638&edit=1
--
Try a CVS snapshot (PHP 4.4):
http://bugs.php.net/fix.php?id=36638&r=trysnapshot44
Try a CVS snapshot (PHP 5.1):
http://bugs.php.net/fix.php?id=36638&r=trysnapshot51
Try a CVS snapshot (PHP 6.0):
http://bugs.php.net/fix.php?id=36638&r=trysnapshot60
Fixed in CVS: http://bugs.php.net/fix.php?id=36638&r=fixedcvs
Fixed in release:
http://bugs.php.net/fix.php?id=36638&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=36638&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=36638&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=36638&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=36638&r=support
Expected behavior: http://bugs.php.net/fix.php?id=36638&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=36638&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=36638&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=36638&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=36638&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=36638&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=36638&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=36638&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=36638&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=36638&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=36638&r=mysqlcfg
