extending a class ?

[thorpe]

hello, fairly new to php after coming from asp.

anyway, a quick question. i have developed a simple mysql database class which handles db connections and queries. i am now working on developing a blog class which will be in charge of adding new blogs, editing, viewing and the like using my existing mysql datbase class.

this meens that when i go to use my blog class, i will indirectly also be using my mysql class.

is this what 'extending' classes is all about?

i dont want to directly use my mysql class.

should my blog class be an extension of the mysql class?

i know this probably comes down to my own choice, but having never worked with any kind of OOP language, just looking for some ideas...

thanks.

[drew010]

well with php oop you technically could do that, but its not really the true meaning of inheritance. extending a class usually goes more along these grounds:

class employee... //base class
|--class salaried_employee //this extends employee
|----class administrator //this further extends salaried_employee

say employee has private data called $netPay, $name, $id

each derived class will still have those same base members, but may potentially have more private members, as well as public functions.

thats really the idea behind reusing classes. i think you will want to just use your mysql class in the new blog setup rather than try to extend it.

[thorpe]

thankyou muchly. that is what i had been doing, and yeah... mkaes more sense.