PHP 4.0 Bug #8937: unset() in context with GLOBAL
| From: | aulbach at unter dot franken dot de | Date: | Fri, 26 Jan 2001 15:25:19 +0000 |
| Subject: | PHP 4.0 Bug #8937: unset() in context with GLOBAL | ||
| Groups: | php.dev | ||
| Request: | Send a blank email to php-dev+get-45049@lists.php.net to get a copy of this message | ||
From: aulbach@unter.franken.de
Operating system: Linux
PHP version: 4.0.3pl1
PHP Bug Type: Scripting Engine problem
Bug description: unset() in context with GLOBAL
unset() in context with GLOBAL has a serious bug. This bug appeard,
when I changed a PHP3-program to PHP4. The problem is now,
that constructs like the following are several times in this old program.
Sorry, I haven't checked, if this problem is fixed in 4.0.4. If so, perhaps someone can tell
me? TIA.
Think this problem depends Zend, cause ZEND_CHANGES tells me:
"unset() is no longer a function, but a statement. It was never
documented as a function so the impact should be no bigger than nada."
I have made a test-case:
<?
function test1 ($dir) {
GLOBAL $x;
unset($x);
$x[$dir]=true;
mydirname($dir);
}
function test2 ($dir) {
GLOBAL $x;
####### unset($x); no unset!
$x[$dir]=true;
mydirname($dir);
}
function mydirname ($dir) {
GLOBAL $x;
$dir=ereg_Replace('/[^/]*$','',$dir);
if (!empty($dir)) {
echo "'$dir'<br>"; flush();
mydirname($dir);
$x[$dir]=true;
}
}
$dir="/hugo/bla/fasel/test"; # first char must be '/' !
unset($x);
test1($dir);
echo "DIRS called with function test1(): "; print_r($x);
echo "<br>";
unset($x);
test2($dir);
echo "DIRS called with function test2(): "; print_r($x);
?>
--
Edit Bug report at: http://bugs.php.net/?id=8937&edit=1