Why use interfaces in PHP (OOP)

Posted on 16th Feb 2014 07:03 pm by admin

I am learning OOP in PHP and its been a pretty good learning experience so far. What I didn't understand at all is interfaces. I understand the implications of multiple inheritance, and interface is used just to solve that. But what's the use?
If we have to define the function in derived class why use interface, why not directly declare and define it inside the derived class?
Am I missing something or is it really useless?

Your Answer:

Login to answer

Other forums

Download Image from URL and Upload it
Ok, I have been googling for the last 1/2 hour trying to figure this out, Most likely I'm just not s

Change Age automatically
hi guys . im new to php , is it possible to change age value in mysql automatically when year change

question about stripslashes and real_escape_string
im cleaning up an old app that I wrote fixing some of the vulernabilities from attacks.

I hav

Get Total From While Loop
I'm trying to get the total for each product and add them for a Grand Total to list outside the loop

Header is not working in IE
Hi ! header function is not working in IE but it works in FF, Safari, Chrome. any help please. :

want to add a break after a certain amount of characters
i was wondering how to add a break in a blog post after a certain amount of characters... any idea o

Not connecting to DB using ruby, error:env.c:257:in oci8lib.so: ORA-12154:
Hi All,

I am trying to connect to the database server from the client server using ruby and f

cURL Sending File as Post
This is a bit complicated, I'm just hoping someone else has run into this and knows how to do it a d

need help in update query
i create a form for update. there are 8 columns in my mysql table. on my main page all the data is r

Execure stored procedure on a timer
Can someone tell me an easier way to execute a stored procedure on a timer? I am using Oracle 10g R