From:             grzegorz at heex dot pl
Operating system: Win XP
PHP version:      5.3.1
PHP Bug Type:     Scripting Engine problem
Bug description:  strange behavior of reference and ? operator

Description:
------------
That code works:

class A{
        private $data;

        public function __construct() {
                $this->data = new stdClass();
        }

        public function & __get($property) {
                if (isset($this->data->$property)) {
                        return $this->data->$property;
                }
                return null;
        }

        public function __set($property,$value) {
                $this->data->$property = $value;
        }
}

function chgTxt(& $txt) {
        $txt = '-----';
}

$o = new A();

$o->int = 1;
$o->int++;
echo $o->int,'<br />';//result: 2 - reference in A::get() works fine

$o->txt = 'string';
chgTxt($o->txt);
echo $o->txt,'<br />';//result: '----' - reference works

Reproduce code:
---------------
That code doesn't work:

class A{
        private $data;

        public function __construct() {
                $this->data = new stdClass();
        }

        public function & __get($property) {
                return isset($this->data->$property) ? $this->data->$property : 
null;
        }

        public function __set($property,$value) {
                $this->data->$property = $value;
        }
}

function chgTxt(& $txt) {
        $txt = '-----';
}

$o = new A();

$o->int = 1;
$o->int++;
echo $o->int,'<br />';//result: 2 - reference in A::get() works fine

$o->txt = 'string';
chgTxt($o->txt);
echo $o->txt,'<br />';//result: 'string' - reference doesn't work

Expected result:
----------------
2
----

Actual result:
--------------
2
string

-- 
Edit bug report at http://bugs.php.net/?id=50606&edit=1
-- 
Try a snapshot (PHP 5.2):            
http://bugs.php.net/fix.php?id=50606&r=trysnapshot52
Try a snapshot (PHP 5.3):            
http://bugs.php.net/fix.php?id=50606&r=trysnapshot53
Try a snapshot (PHP 6.0):            
http://bugs.php.net/fix.php?id=50606&r=trysnapshot60
Fixed in SVN:                        
http://bugs.php.net/fix.php?id=50606&r=fixed
Fixed in SVN and need be documented: 
http://bugs.php.net/fix.php?id=50606&r=needdocs
Fixed in release:                    
http://bugs.php.net/fix.php?id=50606&r=alreadyfixed
Need backtrace:                      
http://bugs.php.net/fix.php?id=50606&r=needtrace
Need Reproduce Script:               
http://bugs.php.net/fix.php?id=50606&r=needscript
Try newer version:                   
http://bugs.php.net/fix.php?id=50606&r=oldversion
Not developer issue:                 
http://bugs.php.net/fix.php?id=50606&r=support
Expected behavior:                   
http://bugs.php.net/fix.php?id=50606&r=notwrong
Not enough info:                     
http://bugs.php.net/fix.php?id=50606&r=notenoughinfo
Submitted twice:                     
http://bugs.php.net/fix.php?id=50606&r=submittedtwice
register_globals:                    
http://bugs.php.net/fix.php?id=50606&r=globals
PHP 4 support discontinued:          http://bugs.php.net/fix.php?id=50606&r=php4
Daylight Savings:                    http://bugs.php.net/fix.php?id=50606&r=dst
IIS Stability:                       
http://bugs.php.net/fix.php?id=50606&r=isapi
Install GNU Sed:                     
http://bugs.php.net/fix.php?id=50606&r=gnused
Floating point limitations:          
http://bugs.php.net/fix.php?id=50606&r=float
No Zend Extensions:                  
http://bugs.php.net/fix.php?id=50606&r=nozend
MySQL Configuration Error:           
http://bugs.php.net/fix.php?id=50606&r=mysqlcfg

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