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

Google Wave
So... has anyone used it yet? Is it any good?

http://wave.google.com/help/wave/about.html#vid

Query issues
I probably have this setup wrong well I know I do because nothing is showing up now. What I want is

Why will this program not run if the variables are not global?
Hey guys I have a kind of perplexing situation that is probably simple, but I can't seem to understa

Simpler method of getting variables from mysql
Hi Guys,

I'm trying to streamline my CMS's code and as I was writing a new page it occured to

Help on query replacing the date
Hi Pals,

i want to replace the current date in a column to some value say C or D or any n

foreach help.
Hello all,

First time I'm attempting to use a foreach statement and was just wondering if my

help with database debug pls
Parse error: syntax error, unexpected T_ELSE in /home/content/m/e/s/mesick/html/students/05/php/chec

Need understanding of this bit of code
Code: <?php
// WHERE clause filters
$arrSQLFilters = array();

//

Strip Slashes Help
I've got a script that i've downloaded of the net to edit multiple fields from my sql database, and

returning data from an ssh2_exec()
here's what i got.


$conn = ssh2_connect($this->_host);
ssh2_auth_password($c