Articles Application Architecture
Application Architecture
Object Oriented Programming in PHP: The Way to Large PHP Projects - Page 9
by: Luis Argerich
|
January 25, 2008
Entering a Danger Zone
When you serialize an object you get a string which has a certain format, you may investigate
it if you are curious, one of the things the string has is the name of the class (nice!)
you may extract it using:
<?php
$herring=serialize($obj);
$vec=explode(':',$herring);
$nam=str_replace("\"",'',$vec[2]);
?>
So suposse you create a class "Universe" and force that all classes must extend universe,
you can define a method clone in Universe as:
<?php
class Universe {
function clone() {
$herring=serialize($this);
$vec=explode(':',$herring);
$nam=str_replace("\"",'',$vec[2]);
$ret=new $nam;
return $ret;
}
}
//Then:
$obj=new Something();
//Something extends Universe !!
$other=$obj->clone();
?>
What you get is a new object of class Something created the same way as using new, the
constructor is called, etc.
I don't know if this is useful for you, but the Universe class which knows the name
of the derived class is a nice concept to experiment.
The only limit is your imagination.
Note: I'm using PHP4, something I write here may not work in PHP3.
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