Php namespace interface

[Nah]

I have PHP simple skeleton project, with folder structures like this:

Project/
           /Source
                       /Contract
                                     /IContract.php
          /ProductOne
                      /Product1.php
          index.php // index is in the same level as Source, in root

Inside IContract.php I have:

<?php 
namespace Source\Contract;

interface IContract {
    public function someView();
}

Inside Source->ProductOne->Product1.php I created class Product1:

namespace Source\ProductOne;
use Source\ProductOne\IContract;

class Product1 implements IContract {
    // logic

Fatal error : Interface ‘Source\ProductOne\IContract’ not found in

So, how to namespace that interface inside my Product1 class? Should I use require statement inside class Product1? Because using namespaces and require doesn’t look good

Hope somebody understands me.

[igor_g]

use Source\Contract\IContract;

That is your interface.

And actually, in web-root should be only files that need access from web (index.php, .css, .js, images). So, I recommend you to change your project structure.

[Nah]

You right about index.php, but use Source\Contract\IContract; doesn’t work

[igor_g]

What is your autoloading mechanism?

[Nah]

I didn’t use composer or spl_autoload_function, yet. I required classes in index.php

[igor_g]

Show this requirements, please.

[ahundiak]

It is up to you to explicitly require all the files needed including your interfaces. You also have an error in your product file.

# Source/ProductOne/Product1.php
namespace Source\ProductOne;
use Source\Contract\IContract; // *** Had the wrong namespace
class Product1 implements IContract {
    public function someView() {
    }
}

# index.php
require_once './Source/Contract/IContract.php';
require_once './Source/ProductOne/Product1.php';

$product = new \Source\ProductOne\Product1();
$product->someView();

There are variations. You could for example require the interface file from inside of whichever files implement the interface. But it quickly becomes a big mess.

If you want, I can post a very simple example of how to use the composer autoloader to eliminate the require statements. Really no reason not to use it.

[Nah]

Thanks!