From:             tklingenberg at lastflood dot com
Operating system: win32
PHP version:      5.1.6
PHP Bug Type:     Variables related
Bug description:  settype() creates variable "by reference"

Description:
------------
settype() needs a variable passed by reference.

if this variable is not defined/set, it does not throw an error. instead,
and that is the bug per se, settype creates the variable passed "by
reference".


Reproduce code:
---------------
<?
/* $var does not exsits, this throws an error */
var_dump($var);

/* settype should work on existing vars only (by &reference) */
$r = settype($var, "string");

/* $var does exist now */
var_dump($var);
?>


Expected result:
----------------
<br />
<b>Notice</b>:  Undefined variable: var in <b>test.php</b> on line
<b>3</b><br />
NULL
<br />
<b>Notice</b>:  Undefined variable: var in <b>test.php</b> on line
<b>6</b><br />
NULL


Actual result:
--------------
<br />
<b>Notice</b>:  Undefined variable: var in <b>test.php</b> on line
<b>3</b><br />
NULL
string(0) ""

-- 
Edit bug report at http://bugs.php.net/?id=38821&edit=1
-- 
Try a CVS snapshot (PHP 4.4): 
http://bugs.php.net/fix.php?id=38821&r=trysnapshot44
Try a CVS snapshot (PHP 5.2): 
http://bugs.php.net/fix.php?id=38821&r=trysnapshot52
Try a CVS snapshot (PHP 6.0): 
http://bugs.php.net/fix.php?id=38821&r=trysnapshot60
Fixed in CVS:                 http://bugs.php.net/fix.php?id=38821&r=fixedcvs
Fixed in release:             
http://bugs.php.net/fix.php?id=38821&r=alreadyfixed
Need backtrace:               http://bugs.php.net/fix.php?id=38821&r=needtrace
Need Reproduce Script:        http://bugs.php.net/fix.php?id=38821&r=needscript
Try newer version:            http://bugs.php.net/fix.php?id=38821&r=oldversion
Not developer issue:          http://bugs.php.net/fix.php?id=38821&r=support
Expected behavior:            http://bugs.php.net/fix.php?id=38821&r=notwrong
Not enough info:              
http://bugs.php.net/fix.php?id=38821&r=notenoughinfo
Submitted twice:              
http://bugs.php.net/fix.php?id=38821&r=submittedtwice
register_globals:             http://bugs.php.net/fix.php?id=38821&r=globals
PHP 3 support discontinued:   http://bugs.php.net/fix.php?id=38821&r=php3
Daylight Savings:             http://bugs.php.net/fix.php?id=38821&r=dst
IIS Stability:                http://bugs.php.net/fix.php?id=38821&r=isapi
Install GNU Sed:              http://bugs.php.net/fix.php?id=38821&r=gnused
Floating point limitations:   http://bugs.php.net/fix.php?id=38821&r=float
No Zend Extensions:           http://bugs.php.net/fix.php?id=38821&r=nozend
MySQL Configuration Error:    http://bugs.php.net/fix.php?id=38821&r=mysqlcfg

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