How to pass a number to the next page

An idiot question: how do I pass a number to the first page of the next page: & lt; ahref = staff. php? Number = 1 & gt; 1 & lt;/a & gt; & lt; br & gt; (pass number = 1) second page: staff. php $ mongomern = an idiot question: how to pass numbers to the next page
First page: 1
(Pass number = 1)
Page 2: staff. php
$ Mongomern = isset ($ _ REQUEST ['Number'])? $ _ REQUEST ['Number']: '1 ';

$ Mongomern = $ mongomern + 2;
It is found that $ mern is always = 2; it cannot be added or subtracted like a number,
I suspect that the letter '1' is passed, not the number 1. is it true? If it is correct, how can we transmit numbers?


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$ Merge mern = intval ($ _ GET ['Number']);
------ Solution --------------------
Var_dump ($ _ REQUEST); to see if it has been passed?