PHP: $_GET is unable to fetch the URL query parameters -

I'm trying to bring URL query parameters using the $ _ GET method as below I:

URL: www.xyz.com?pagewanted=2 $ pageview = $ _GET ["PageWrite"]; The value of "pageview" is echo: ". $ Pagewanted;

Output: The value of the pawkwad is:

What is the problem not being able to get the value of the query? Can it be a server problem?