note 49466 deleted from language.variables.variable by danbrown

Note Submitter: ---- in response to "pear at inkas dot it" ${$_SESSION['var_name']} does work. What doesn''t work is something like this: <?php // consider file has been called with ?var=val function test() { $val = '_GET'; var_dump($$a); echo "\n"; var_dump(${$_GET['var']}); } test(); ?> will output NULL string(4) "_GET" the use of $$a inside a function or method will not reference the superglobal ever, but instead look for a local variable $_GET, which will never exist, even if you try to create one by doing something like "$_GET = array();" inside the function. setting "global $_GET" inside the function won't work also. You simply can't create a reference to a superglobal inside a function or method by trying to access it via a variable variable.