Ashley Sheridan wrote:
On Sun, 2008-09-14 at 18:04 +0100, Stut wrote:
On 14 Sep 2008, at 17:03, Tom Shaw wrote:
When you start a session using session_start() and start adding
indexes to
the session super global array a small cookie is set on the clients
side
that keeps track of the user, and the session index data that you
create is
stored only in the memory on the server side unless specified in the
PHP
file to store the session data in some specified directory or means
db. Plus
you can access and manipulate the session array just like you could
any
other array.
By default session data is stored in files in /tmp. This can be
changed in php.ini. You can also completely override the session
management system allowing you to store the data anywhere you want.
For example: http://stut.net/blog/2008/07/20/mysql-sessions/
You can indeed access and manipulate the session array just like any
other array but there's one important different. Session array keys
must be valid variable names. This means that you cannot use numeric
indexes, and there are a few other restrictions. For more info see the
manual (http://php.net/language.variables).
-Stut
--
http://stut.net/
Another caveat is that you must call session_start() before *any*
content is sent to the browser, and this includes even a single space
character.
There is a setting the php.ini that will allow you to enable sessions
without requiring you to call session_start(). It will automagically
turned on for you at the start of every script execution.
Ash
www.ashleysheridan.co.uk
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