Justin Giboney wrote:
This is my test page here.
http://www.expresslanevideo.com/docs/guidtest2.php
*Ignore the specific class and its functions (unless you want to know
more about it), it is just used as an example.
This page, runs the GUID class function called getinstance. Since the
GUID class is set up as a singleton class, it should only be created
once, or every time it is unused for a period of time and deleted from
memory.
In the __construct function of the class, I have put an echo that says
creating so that i know every time a new object is being created.
The object is being created every time the page is refreshed or hit. I
don't want this to happen. I want to only have one object on the
system at a time, that is shared by all users.
I ran a test and found out that JSP/Tomcat works the way that I want,
but since I like PHP, I want to be able to do this in PHP. How can
this be accomplish?
Thank you,
Justin Giboney
Since PHP is stateless by design, you cannot maintain an object alive
past one request. In PHP, everything is created and then destroyed on
every request. The only thing you can do is save the contents of the
object (possibly by serializing it) and re-create it on the next
request. Have you profiled the application? Instantiating a couple of
objects is not generally an expensive operation (compared to other
things), so is it really such a big problem to have object instantiated
on every request.
If you really, REALLY want to keep an instantiated object across
requests, do a google search for "php bananas" or "php script running
machine". I don't know if it's usable though.
Alvaro
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