From: zhalassy at loginet dot hu
Operating system: Irrelevant
PHP version: 5.2.12
PHP Bug Type: Arrays related
Bug description: === could be a bit smarter with arrays...
Description:
------------
At the moment, you can't do things like:
$GLOBALS === $GLOBALS;
or
$a = array('a' => &$a); $a === $a['a'];
both causes fatal error claiming too deep nesting level.
I find it rather strange that you can use references, but you can't test
if something is referencing the same thing or not...
It would be nice to have some ==== or is_same(&$a,&$b) function which
would just do a lookup in the symbol table and if the two variables
referencing the same thing it would return true, false otherwise.
Reproduce code:
---------------
$a = is_same($GLOBALS,$GLOBALS);
$x = array('x' => &$x);
$b = is_same($x, $x['x']);
$x1 = array('c' => &$x1);
$x2 = array('c' => &$x2); //same layout, but not the same variable;
$c = is_same($x1,$x2);
$y1 = "test";
$y2 = $y1; /* plain assignement, maybe same till y1 or y2 not changed, but
is_same() shouldn't get affected by optimization behaviour */
$d = is_same($y1,$y2);
$z1 = "test2";
$z2 = &$z1; //or $z2 =& $z1;
$e = is_same($z1,$z2);
Expected result:
----------------
$a === true;
$b === true;
$c === false;
$d === false;
$e === true;
Actual result:
--------------
No way to do this ATM (AFAIK). But please tell me if i didn't read the
documentation properly...
--
Edit bug report at http://bugs.php.net/?id=50739&edit=1
--
Try a snapshot (PHP 5.2):
http://bugs.php.net/fix.php?id=50739&r=trysnapshot52
Try a snapshot (PHP 5.3):
http://bugs.php.net/fix.php?id=50739&r=trysnapshot53
Try a snapshot (PHP 6.0):
http://bugs.php.net/fix.php?id=50739&r=trysnapshot60
Fixed in SVN:
http://bugs.php.net/fix.php?id=50739&r=fixed
Fixed in SVN and need be documented:
http://bugs.php.net/fix.php?id=50739&r=needdocs
Fixed in release:
http://bugs.php.net/fix.php?id=50739&r=alreadyfixed
Need backtrace:
http://bugs.php.net/fix.php?id=50739&r=needtrace
Need Reproduce Script:
http://bugs.php.net/fix.php?id=50739&r=needscript
Try newer version:
http://bugs.php.net/fix.php?id=50739&r=oldversion
Not developer issue:
http://bugs.php.net/fix.php?id=50739&r=support
Expected behavior:
http://bugs.php.net/fix.php?id=50739&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=50739&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=50739&r=submittedtwice
register_globals:
http://bugs.php.net/fix.php?id=50739&r=globals
PHP 4 support discontinued: http://bugs.php.net/fix.php?id=50739&r=php4
Daylight Savings: http://bugs.php.net/fix.php?id=50739&r=dst
IIS Stability:
http://bugs.php.net/fix.php?id=50739&r=isapi
Install GNU Sed:
http://bugs.php.net/fix.php?id=50739&r=gnused
Floating point limitations:
http://bugs.php.net/fix.php?id=50739&r=float
No Zend Extensions:
http://bugs.php.net/fix.php?id=50739&r=nozend
MySQL Configuration Error:
http://bugs.php.net/fix.php?id=50739&r=mysqlcfg
