| Re: A Few Noob Questions [message #175162 is a reply to message #175155] |
Thu, 18 August 2011 14:12  |
eBob.com
Messages: 11
Registered: August 2011
Karma:
|
Junior Member |
|
|
Thank you very much A.
Bob
"A.Reader" <anonymously(at)example(dot)com> wrote in message
news:ct1n47lde3340lu646qe5hhrlc496mpjfu(at)4ax(dot)com...
> On Tue, 16 Aug 2011 20:31:30 -0400,
> "eBob.com" <eBob(dot)com(at)totallybogus(dot)com> wrote:
>
>> Thank you very much Denis. But now I have to ask ... How global are the
>> $GLOBALS? From you answer I assume that $GLOBALS have a scope which
>> exceeds
>> one file. But how far beyond one file?
>>
>> Are there any kind of read/write variables which are shared between users?
>
> I'd suggest avoiding $GLOBALS because it's a bit old and kludgey.
>
> The $_SESSION array is available to all your routines and
> persistent within your context --it's automagically saved and
> restored between your pages and sessions. So you could have a
> number of different programs with different purposes all sharing
> the same $_SESSION array.
>
> But your $_SESSION array is not available to anyone else unless
> you contrive to make it available, for example by mailing the
> other person your persistent session cookie, in effect making
> that person a virtual you.
>
> As far as sharing vars between users, I think you'd have to work
> at it since one of PHP's goals is that your storage NOT be
> available to others.
>
> I've not so far had any need for it, so there might well be a
> half-dozen solutions floating around out there, but if I did need
> to have shared memory, I'd look into sockets, or shmem if the
> users were all served from the same machine. The memory-caching
> daemon memcached might be useful too.
|
|
|
|
Calendar
Search
Help
Members
Register
Login
Home
]