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"]="\"><script>script stuff</script>";
$_REQUEST["var2"]="a_string_of_course";
$_REQUEST["arr1"]["elem1"]="<script>script 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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