#38507 [NEW]: __set "overloading" and language incongruency with arrays
From: phpa dot 20 dot crgtk at spamgourmet dot com
Operating system: Windows XP/2003 but not relevant
PHP version: 5CVS-2006-08-18 (snap)
PHP Bug Type: Scripting Engine problem
Bug description: __set "overloading" and language incongruency with arrays
Description:
------------
Fact: By utilizing the __get() overload functionality in a class, PHP
allows one to return a dynamic member of an object as an array that can be
used as if the array were an actual static member of the object. [Example
(1) below].
Issue: However, a glaring incongruency in the PHP language arrises when
one attempts to utilze the __set() overload functionality to modify the
given dynamic member array. One can get, but cannot set the dynamic member
as if it were an array. [Example (2) below].
Consequence: This situation prevents one from making a drop-in replacement
object -- that utilizes dynamic member arrays -- for an object that
originally contained static member arrays.
Reproduce code:
---------------
class MyClass
{
function __get($name){
return array("hooray"=>"for",
"language"=>"incongruencies");
}
function __set($name, $value){
echo "set was passed:\n";
echo print_r($name, true)."\n";
echo print_r($value, true)."\n";
}
}
$instance = new MyClass();
// (1) proof of dynamic member "being" an array
print_r($instance->dynmember);
// (1) proof of dynamic member array "being accessed"
$piece = $instance->dynmember["language"];
echo "piece is: $piece\n\n";
// (2) issue: since one can do the above, one expects to be able to do the
following
$piece = "being congruent";
$instance->dynmember['language'] = $piece; // as of php 5.2, literally
does nothing
Expected result:
----------------
Since the language does not seem to have any current capability of
detecting this condition, the following is a _proposed_ result of the
above code:
Array
(
[hooray] => for
[language] => incongruencies
)
piece is: incongruencies
set was passed:
dynmember
Array
(
[language] => being congruent
)
Actual result:
--------------
Please observe that there are no errors in the output below. That is
because there are literally no errors raised by PHP; the code fails
silently.
Array
(
[hooray] => for
[language] => incongruencies
)
piece is: incongruencies
--
Edit bug report at http://bugs.php.net/?id=38507&edit=1
--
Try a CVS snapshot (PHP 4.4): http://bugs.php.net/fix.php?id=38507&r=trysnapshot44
Try a CVS snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=38507&r=trysnapshot52
Try a CVS snapshot (PHP 6.0): http://bugs.php.net/fix.php?id=38507&r=trysnapshot60
Fixed in CVS: http://bugs.php.net/fix.php?id=38507&r=fixedcvs
Fixed in release: http://bugs.php.net/fix.php?id=38507&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=38507&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=38507&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=38507&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=38507&r=support
Expected behavior: http://bugs.php.net/fix.php?id=38507&r=notwrong
Not enough info: http://bugs.php.net/fix.php?id=38507&r=notenoughinfo
Submitted twice: http://bugs.php.net/fix.php?id=38507&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=38507&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=38507&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=38507&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=38507&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=38507&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=38507&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=38507&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=38507&r=mysqlcfg
Thread (2 messages)
- phpa dot 20 dot crgtk at spamgourmet dot com