When is :: used ?

[colap]

Zend_Db_Table::setDefaultAdapter($dbAdapter);

 

Is setDefaultAdapter a static function ?

Is :: used for static functions ?

 

Is it equivalent to the previous one ?

$obj=new Zend_Db_Table();

$obj->setDefaultAdapter($dbAdapter);

[Altrozero]

http://uk3.php.net/manual/en/language.oop5.paamayim-nekudotayim.php

 

It basically allows you to access static functions and const variables in a class without having to create an instance of it.

 

e.g you could go

 

class obj {

  const var = 'test';

}

 

echo obj::var;