php Get url param with symbols

Im trying to get a url param value with symbols in php string

&value=xdz_#*

$val = $_GET[‘value’];
$val = urldecode($_GET[‘value’]);

This ones always returns the value without the symbols #* like: xdz_

any sugestion will be appreciated

>Solution :

Extracting from my previous comment that brought the answer:

Your URL should be properly URL encoded. Those symbols are not a problem when the encoded is correct.