ID: 16687
Updated by: [EMAIL PROTECTED]
Reported By: [EMAIL PROTECTED]
-Status: Bogus
+Status: Open
-Bug Type: Scripting Engine problem
+Bug Type: Documentation problem
Operating System: Red Hat Linux 7.1
PHP Version: 4.2.0
New Comment:
Reclassified.
It should be documented that due the special way super globals are
treated the cannot be used with variable variables.
Previous Comments:
------------------------------------------------------------------------
[2002-04-19 12:40:50] [EMAIL PROTECTED]
True true. Derick (or someone else) mind briefly explaining why this
is/has to be different?
------------------------------------------------------------------------
[2002-04-19 11:11:00] [EMAIL PROTECTED]
But then why does it work under certain circumstances and not others?
Regardless whether intended or not, this is inconsistent behaviour.
I also think that having these differences between regular variables
and the "superglobals" shouldn't be necessary. If I can't use them in
the same contexts as regular variables, then I would personally prefer
the $HTTP_*_VARS instead, because you can.
I have found my approach to abstracting this difference ($HTTP_*_VARS
vs. $_*) between PHP versions to be really beneficial to my scripts. I
can abstract them both down to one name, and use a single reference to
the appropriate one instead of sticking if statements every time I need
to know which one to use.
Sorry to keep buggin' ya, but I think this may be a fair enough
argument for change.
------------------------------------------------------------------------
[2002-04-19 10:33:59] [EMAIL PROTECTED]
You can't use superglobals indirectly, check this:
$t = "_GET";
var_dump ($$t);
doesn't work neither, and it wasn't supposed to work.
However, this does work (because $HTTP_GET_VARS is not a superglobal):
$t = "HTTP_GET_VARS";
var_dump ($$t);
Derick
------------------------------------------------------------------------
[2002-04-18 19:09:09] [EMAIL PROTECTED]
reclassified
------------------------------------------------------------------------
[2002-04-18 17:30:28] [EMAIL PROTECTED]
It seems to be happening only under certain contexts. Here is a script
that works fine:
<?php
$test = 'asdf';
define ('_TEST', 'test');
echo 'constant: ';
print_r (${_TEST});
echo '<br />direct: ';
print_r ($test);
?>
And here is code that does not:
<?php
if (PHP_VERSION < '4.1.0') {
define ('_GET', 'HTTP_GET_VARS');
} else {
define ('_GET', '_GET');
}
class CGI {
var $param = array ();
function CGI () {
global $HTTP_GET_VARS, $HTTP_POST_VARS, $HTTP_POST_FILES;
if (${_GET}) {
reset (${_GET});
while (list ($k, $v) = each (${_GET})) {
if (get_magic_quotes_gpc () == 1) {
$this->{$k} = stripslashes ($v);
} else {
$this->{$k} = $v;
}
array_push ($this->param, $k);
}
} else {
echo '<br />_GET value: '; print_r (_GET);
echo '<br />$_GET value: '; print_r ($_GET);
echo '<br />${_GET} value: '; print_r (${_GET});
}
}
}
$cgi = new CGI;
echo '<br />$cgi value: '; print_r ($cgi);
?>
------------------------------------------------------------------------
The remainder of the comments for this report are too long. To view
the rest of the comments, please view the bug report online at
http://bugs.php.net/16687
--
Edit this bug report at http://bugs.php.net/?id=16687&edit=1
