Re: [PHP] Re: problem with super global '$_REQUEST'
It does. ;-) I was just throwing out an interesting piece of code. Honestly, I'm surprised that it doesn't segfault PHP. Good job, internals! On Thu, 15 Jul 2004 21:02:10 -0700, Dennis Gearon [EMAIL PROTECTED] wrote: I bet it would work, 'cause whenever $GLOBALS is 'print_r'd, Globals shows up and a 'recursion note' ends the execution of 'print_r'. Justin Patrin wrote: You *can* unset it, you just have to unset the place where it really sits. When you have a global in a function, then unset it, you only disconnect the variable. unset doesn't destroy a variable, it just breaks the reference. As I said in my earlier e-mail, using this *will* work (I tested it): unset($GLOBALS['_REQUEST']); $GLOBALS is itself a superglobal.hmmm, wonder what would happen if you unset($GLOBALS['GLOBALS']) -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php !DSPAM:40f75144237587900317931! -- DB_DataObject_FormBuilder - The database at your fingertips http://pear.php.net/package/DB_DataObject_FormBuilder paperCrane --Justin Patrin-- -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
[PHP] Re: problem with super global '$_REQUEST'
OK, after lots of reading, I find out it's not possible to unset something that has been 'globalized' in a function, nor ANY global value. However, some online manual pages documented that it's possible to assign NULL to the value. Well that's NOT unset.
But,that got me to thinking. What about assigning an unset variable to the global? IT
WORKS!
Change the line below:
unset( $_REQUEST );
*--to--*
$unset_variable;
$_REQUEST = $unset_variable;
VOILA! no more $_REQUEST super_global. Now, I need to see if it can still be assigned
to as if it's a super global.
Dennis Gearon wrote:
I have a function in a class that unsets the superglobal $_REQUEST;
Well, it's supposed to, it doesn't do it. I'm on version 4.2.3 of PHP.
This page:
http://us2.php.net/manual/en/language.variables.predefined.php#language.variables.superglobals
says that $_REQUEST is a super global as of version 4.1.0. Is there some
bug I don't know about or am I doing something wrong?
Here's the code:
?PHP
$_REQUEST[var1]=\scriptscript stuff/script;
$_REQUEST[var2]=a_string_of_course;
$_REQUEST[arr1][elem1]=scriptscript stuff2/script;
$_REQUEST[arr1][elem2]=another_string_of_course;
if( !defined('TEST_UNSET') ){
define('TEST_UNSET', TRUE);
class abstract_environment{
var $_REQUEST;
function abstract_environment(){
$this-_REQUEST=$_REQUEST;
unset( $_REQUEST );
echo(unset was done);
$this-_clean_all_vars();
}
function _clean_all_vars(){
//ADD OTHER PROCESSING AS NEEDED
$this-_strip_tags_arr( $this-_REQUEST );
}
function _strip_tags_arr( $arr_or_solo ){
if( isset($arr_or_solo) ){
if( !is_array($arr_or_solo) ){
$arr_or_solo= strip_tags($arr_or_solo);
} else {
reset ($arr_or_solo);
while (list($key, ) = each ($arr_or_solo)) {
if( isset($arr_or_solo[$key]) ){
if( is_array($arr_or_solo[$key]) ){
$this-_strip_tags_arr($arr_or_solo[$key]);
} else {
$arr_or_solo[$key] =
strip_tags($arr_or_solo[$key]);
}
}
}
}
}
}
}
}
$abs_env=new abstract_environment;
echo pre;
print_r($_REQUEST);
print_r( $abs_env );
echo /pre;
?
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Re: [PHP] Re: problem with super global '$_REQUEST'
You *can* unset it, you just have to unset the place where it really
sits. When you have a global in a function, then unset it, you only
disconnect the variable. unset doesn't destroy a variable, it just
breaks the reference.
As I said in my earlier e-mail, using this *will* work (I tested it):
unset($GLOBALS['_REQUEST']);
$GLOBALS is itself a superglobal.hmmm, wonder what would happen if
you unset($GLOBALS['GLOBALS'])
On Thu, 15 Jul 2004 15:25:55 -0700, Dennis Gearon [EMAIL PROTECTED] wrote:
OK, after lots of reading, I find out it's not possible to unset something that has
been 'globalized' in a function, nor ANY global value. However, some online manual
pages documented that it's possible to assign NULL to the value. Well that's NOT
unset.
But,that got me to thinking. What about assigning an unset variable to the global?
IT WORKS!
Change the line below:
unset( $_REQUEST );
*--to--*
$unset_variable;
$_REQUEST = $unset_variable;
VOILA! no more $_REQUEST super_global. Now, I need to see if it can still be
assigned to as if it's a super global.
Dennis Gearon wrote:
I have a function in a class that unsets the superglobal $_REQUEST;
Well, it's supposed to, it doesn't do it. I'm on version 4.2.3 of PHP.
This page:
http://us2.php.net/manual/en/language.variables.predefined.php#language.variables.superglobals
says that $_REQUEST is a super global as of version 4.1.0. Is there some
bug I don't know about or am I doing something wrong?
Here's the code:
?PHP
$_REQUEST[var1]=\scriptscript stuff/script;
$_REQUEST[var2]=a_string_of_course;
$_REQUEST[arr1][elem1]=scriptscript stuff2/script;
$_REQUEST[arr1][elem2]=another_string_of_course;
if( !defined('TEST_UNSET') ){
define('TEST_UNSET', TRUE);
class abstract_environment{
var $_REQUEST;
function abstract_environment(){
$this-_REQUEST=$_REQUEST;
unset( $_REQUEST );
echo(unset was done);
$this-_clean_all_vars();
}
function _clean_all_vars(){
//ADD OTHER PROCESSING AS NEEDED
$this-_strip_tags_arr( $this-_REQUEST );
}
function _strip_tags_arr( $arr_or_solo ){
if( isset($arr_or_solo) ){
if( !is_array($arr_or_solo) ){
$arr_or_solo= strip_tags($arr_or_solo);
} else {
reset ($arr_or_solo);
while (list($key, ) = each ($arr_or_solo)) {
if( isset($arr_or_solo[$key]) ){
if( is_array($arr_or_solo[$key]) ){
$this-_strip_tags_arr($arr_or_solo[$key]);
} else {
$arr_or_solo[$key] =
strip_tags($arr_or_solo[$key]);
}
}
}
}
}
}
}
}
$abs_env=new abstract_environment;
echo pre;
print_r($_REQUEST);
print_r( $abs_env );
echo /pre;
?
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--
DB_DataObject_FormBuilder - The database at your fingertips
http://pear.php.net/package/DB_DataObject_FormBuilder
paperCrane --Justin Patrin--
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Re: [PHP] Re: problem with super global '$_REQUEST'
I bet it would work, 'cause whenever $GLOBALS is 'print_r'd, Globals shows up and a 'recursion note' ends the execution of 'print_r'. Justin Patrin wrote: You *can* unset it, you just have to unset the place where it really sits. When you have a global in a function, then unset it, you only disconnect the variable. unset doesn't destroy a variable, it just breaks the reference. As I said in my earlier e-mail, using this *will* work (I tested it): unset($GLOBALS['_REQUEST']); $GLOBALS is itself a superglobal.hmmm, wonder what would happen if you unset($GLOBALS['GLOBALS']) -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
