From: [EMAIL PROTECTED]
Operating system: Linux
PHP version: 4.3.10
PHP Bug Type: Scripting Engine problem
Bug description: Setting a static variable by reference makes the variable
non-static
Description:
------------
When setting a static variable by reference (as one would want to do in
PHP4 since the object model uses copies instead of references) the static
variable becomes non-static and is lost when the function ends. I assume
this could be fixed by making the reference itself static instead of the
variable.
This can also be "fixed" by using a container as the static variable (an
array or object) and setting the var by ref within the array/object.
$v[0] =& $var;
or
$v->v =& $var;
I also tested this in PHP 5.0.4 and the same thing happens. I realize that
PHP5 uses refs instead of copies by default.
Reproduce code:
---------------
function a() {
static $v;
$a = 0;
if (!isset($v)) {
$v =& $a;
echo 'setting v<br/> ';
}
}
a();
a();
function b() {
static $w;
$a = 0;
if (!isset($w)) {
$w = $a;
echo 'setting w<br/> ';
}
}
b();
b();
Expected result:
----------------
setting v
setting w
Actual result:
--------------
setting v
setting v
setting w
--
Edit bug report at http://bugs.php.net/?id=32845&edit=1
--
Try a CVS snapshot (php4): http://bugs.php.net/fix.php?id=32845&r=trysnapshot4
Try a CVS snapshot (php5.0):
http://bugs.php.net/fix.php?id=32845&r=trysnapshot50
Try a CVS snapshot (php5.1):
http://bugs.php.net/fix.php?id=32845&r=trysnapshot51
Fixed in CVS: http://bugs.php.net/fix.php?id=32845&r=fixedcvs
Fixed in release: http://bugs.php.net/fix.php?id=32845&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=32845&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=32845&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=32845&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=32845&r=support
Expected behavior: http://bugs.php.net/fix.php?id=32845&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=32845&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=32845&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=32845&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=32845&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=32845&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=32845&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=32845&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=32845&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=32845&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=32845&r=mysqlcfg
