From:             [EMAIL PROTECTED]
Operating system: Win 2000 NT
PHP version:      4.2.1
PHP Bug Type:     Scripting Engine problem
Bug description:  Inexplicable arithmetical error due to references

<? 
$a = 7;
$a = $a + $a++;
echo $a; 
//the result is 14;
?>

When I add a reference to $a, the behavior of $a + $a++ becomes
inexplicable different. Note that $a isn't changed anywhere!

<?
$a = 7;
$b =& $a;
$a = $a + $a++;
echo $a; 
//the result is 15;
?>

The only difference is $b =& $a, but why $a takes care of references to
itself?
-- 
Edit bug report at http://bugs.php.net/?id=20673&edit=1
-- 
Try a CVS snapshot:         http://bugs.php.net/fix.php?id=20673&r=trysnapshot
Fixed in CVS:               http://bugs.php.net/fix.php?id=20673&r=fixedcvs
Fixed in release:           http://bugs.php.net/fix.php?id=20673&r=alreadyfixed
Need backtrace:             http://bugs.php.net/fix.php?id=20673&r=needtrace
Try newer version:          http://bugs.php.net/fix.php?id=20673&r=oldversion
Not developer issue:        http://bugs.php.net/fix.php?id=20673&r=support
Expected behavior:          http://bugs.php.net/fix.php?id=20673&r=notwrong
Not enough info:            http://bugs.php.net/fix.php?id=20673&r=notenoughinfo
Submitted twice:            http://bugs.php.net/fix.php?id=20673&r=submittedtwice
register_globals:           http://bugs.php.net/fix.php?id=20673&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=20673&r=php3
Daylight Savings:           http://bugs.php.net/fix.php?id=20673&r=dst
IIS Stability:              http://bugs.php.net/fix.php?id=20673&r=isapi

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