While yes $_POST is a supergloabal, even a superglobal has it's own
scope. The scope of $_POST is to the call of the user to the web server.
Therefor, no User A's information will not be overwritten by User B's
information.
Hope this helps. Let me know if you want any further clarification. This
was just a very simplified answer.
Keith wrote:
Let's say user A and user B submitting purchase order form with
"order.php" at the same time, with method=post action='confirmation.php'.
(1) Will $_POST['order'] submitted by user A replaced by
$_POST['order'] submitted by user B, and the both user A & B getting
the same order, which is made by user B? Why?
(2) Since $_POST['xxx'] is superglobal array, will $_POST['order']
read by users other than A & B? In shared hosting server environment,
are all domains hosted within that server using the same $_POST array?
Can $_POST array accessible by all domains even if not from the
originating domain?
Thx for clarification!
Keith
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