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?

Other php-forum

Help With editting and deleting form
So look at this image :

http://img194.imageshack.us/img194/8272/snapshot5f.png
This table

Remote Database Access
Hey guys!!

OK, i'm used to only working with databases from the CPANEL, accessing phpMyAdmin

parse error
Parse error: syntax error, unexpected '[', expecting ')' in /Users/admin/Sites/phptest/array.php on

image upload script not working with png
The basic process of this php code is to take the submitted file, convert it to a small JPG thumbnai

login page does not execute a else statement
I've created a login page using sessions.
When an incorrect user name or password is entered then

get url?
how do i get the url of the page i'm currently on, on my website.. i think its get header.. how do i

Having a problem get the selected item from a drop down menu
I have been looking at this for days now.

I have a drop down menu that get it's values from a

Help! refer to a friend script with captcha code
Hi guys, I am posting on here in desperate need for some help with an ongoing search I have been doi

Please help with SMTP Authenticated PHP Email Form
Hello, I'm creating a PHP email form, and for this particular server, I have to use SMTP Authenticat

My XSRF Prevention code isn't working
First of all, thanks for the generous help you guys have given me in the past on this forum.
Seco