Req #51808 [NEW]: Operator `new' does not support expressions for class name

From: Date: Thu, 13 May 2010 10:53:31 +0000
Subject: Req #51808 [NEW]: Operator `new' does not support expressions for class name
Groups: php.bugs 
Request: Send a blank email to php-bugs+get-150433@lists.php.net to get a copy of this message 
From:             
Operating system: linux/current
PHP version:      5.2.13
Package:          Class/Object related
Bug Type:         Feature/Change Request
Bug description:Operator `new' does not support expressions for class name

Description:
------------
Operator `new' accepts either class name as either symbol token or
variable
containing class name (T_STRING or
T_VARIABLE), but does not allow expressions returning class name.

Test script:
---------------
/* first form, works */
$handler = new SomeClass($constructorParam);

/* second form, works */
$handlerClass = handlerFor($something); /* returns name of some class to be
instantiated */
$handler = new $handlerClass($constructorParam);

/* third form -- does not work */
$handler = new (handlerFor($something))($constructorParam);

Expected result:
----------------
The third form ought to work just like the other two, so one doesn't need
to
create extra variable for single use.

Actual result:
--------------
PHP Parse error:  syntax error, unexpected '(', expecting T_STRING or
T_VARIABLE
or '$'

-- 
Edit bug report at http://bugs.php.net/bug.php?id=51808&edit=1
-- 
Try a snapshot (PHP 5.2):            http://bugs.php.net/fix.php?id=51808&r=trysnapshot52
Try a snapshot (PHP 5.3):            http://bugs.php.net/fix.php?id=51808&r=trysnapshot53
Try a snapshot (PHP 6.0):            http://bugs.php.net/fix.php?id=51808&r=trysnapshot60
Fixed in SVN:                        http://bugs.php.net/fix.php?id=51808&r=fixed
Fixed in SVN and need be documented: http://bugs.php.net/fix.php?id=51808&r=needdocs
Fixed in release:                    http://bugs.php.net/fix.php?id=51808&r=alreadyfixed
Need backtrace:                      http://bugs.php.net/fix.php?id=51808&r=needtrace
Need Reproduce Script:               http://bugs.php.net/fix.php?id=51808&r=needscript
Try newer version:                   http://bugs.php.net/fix.php?id=51808&r=oldversion
Not developer issue:                 http://bugs.php.net/fix.php?id=51808&r=support
Expected behavior:                   http://bugs.php.net/fix.php?id=51808&r=notwrong
Not enough info:                     http://bugs.php.net/fix.php?id=51808&r=notenoughinfo
Submitted twice:                     http://bugs.php.net/fix.php?id=51808&r=submittedtwice
register_globals:                    http://bugs.php.net/fix.php?id=51808&r=globals
PHP 4 support discontinued:          http://bugs.php.net/fix.php?id=51808&r=php4
Daylight Savings:                    http://bugs.php.net/fix.php?id=51808&r=dst
IIS Stability:                       http://bugs.php.net/fix.php?id=51808&r=isapi
Install GNU Sed:                     http://bugs.php.net/fix.php?id=51808&r=gnused
Floating point limitations:          http://bugs.php.net/fix.php?id=51808&r=float
No Zend Extensions:                  http://bugs.php.net/fix.php?id=51808&r=nozend
MySQL Configuration Error:           http://bugs.php.net/fix.php?id=51808&r=mysqlcfg

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