[Add Explanation For Class::Method() Vs Object->Method() ?]

Dear Larry,

 

p13 :

 

 

 

 

$obj = new SomeClass();

$obj->doThis();

 

 

p 53:

$app = Yii::createWebApplication($config);

$app->run();

 

I Searched on the Internet and found the explanation about Static methods, but maybe you could add a short explanation p13 about this ?

 

I found a clear answer here

http://stackoverflow.com/questions/3961456/difference-double-colon-and-arrow-operators-in-php

 

my 2 cents...

 

Thanks for reading.

Olivier.