what is the exact difference between PHP static class and singleton class
- by Saif Bechan
I have always used a Singleton class for a registry object in PHP. As all Singleton classes I think the main method looks like this:
class registry
{
public static function singleton()
{
if( !isset( self::$instance ) )
{
self::$instance = new registry();
}
return self::$instance;
}
public function doSomething()
{
echo 'something';
}
}
So whenever I need something of the registry class I use a function like this:
registry::singleton()->doSomethine();
Now I do not understand what the difference is between creating just a normal static function. Will it create a new object if I just use a normal static class.
class registry
{
public static function doSomething()
{
echo 'something';
}
}
Now I can just use:
registry::doSomethine();
Can someone explain to me what the function is of the singleton class. I really do not understand this.
