From:
Operating system: linux
PHP version: 5.3.6
Package: Unknown/Other Function
Bug Type: Bug
Bug description:wrong equality of string numbers
Description:
------------
comparison of strings using == shows wrong results when both strings are
numbers (digits) around PHP_MAX_INT;
the same comparison using === works correctly;
tested on 64 bit systems only, affects also PHP 5.3.5
Test script:
---------------
$a = '9223372036854775807';
$b = '9223372036854775808';
if ($a == $b) {
echo "$a == $b\n";
}
else {
echo "$a != $b\n";
}
// displays 9223372036854775807 == 9223372036854775808
Expected result:
----------------
should display
9223372036854775807 != 9223372036854775808
Actual result:
--------------
displays
9223372036854775807 == 9223372036854775808
--
Edit bug report at http://bugs.php.net/bug.php?id=54547&edit=1
--
Try a snapshot (PHP 5.2):
http://bugs.php.net/fix.php?id=54547&r=trysnapshot52
Try a snapshot (PHP 5.3):
http://bugs.php.net/fix.php?id=54547&r=trysnapshot53
Try a snapshot (trunk):
http://bugs.php.net/fix.php?id=54547&r=trysnapshottrunk
Fixed in SVN:
http://bugs.php.net/fix.php?id=54547&r=fixed
Fixed in SVN and need be documented:
http://bugs.php.net/fix.php?id=54547&r=needdocs
Fixed in release:
http://bugs.php.net/fix.php?id=54547&r=alreadyfixed
Need backtrace:
http://bugs.php.net/fix.php?id=54547&r=needtrace
Need Reproduce Script:
http://bugs.php.net/fix.php?id=54547&r=needscript
Try newer version:
http://bugs.php.net/fix.php?id=54547&r=oldversion
Not developer issue:
http://bugs.php.net/fix.php?id=54547&r=support
Expected behavior:
http://bugs.php.net/fix.php?id=54547&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=54547&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=54547&r=submittedtwice
register_globals:
http://bugs.php.net/fix.php?id=54547&r=globals
PHP 4 support discontinued: http://bugs.php.net/fix.php?id=54547&r=php4
Daylight Savings: http://bugs.php.net/fix.php?id=54547&r=dst
IIS Stability:
http://bugs.php.net/fix.php?id=54547&r=isapi
Install GNU Sed:
http://bugs.php.net/fix.php?id=54547&r=gnused
Floating point limitations:
http://bugs.php.net/fix.php?id=54547&r=float
No Zend Extensions:
http://bugs.php.net/fix.php?id=54547&r=nozend
MySQL Configuration Error:
http://bugs.php.net/fix.php?id=54547&r=mysqlcfg
