php tutorial - Namespace in php - bangla

In this video, I have discussed about how to use namespace, what is namespace, How namespace can help us to use other people's code. all resource file will be available on following link

https://github.com/polodev/namespace_in_php_yt_bangla

namespace in php
In order to avoid name collisions between name, function, constants we use namespace. which help use to encapsulate with different grouping despite having same class, functions or constant name. We add namespace top of our php file with namespace keyword

namespace Dhaka\Banana;
class Fruit {

public $name = 'banana';
}
Another use of namespace is, using as keyword we can make alias of very big name or differentiate same name classes functions.

use Dhaka\Banana\Fruit as Banana;
using namespace
we can directly use any class which is under a namespace by adding full path

$fruit = new Dhaka\Banana\Fruit();
Or, using use statement we just call class or functions

use Dhaka\Banana\Fruit();
$fruit = Fruit()
as keyword
when we have class with same name or we want to get shorter or readable name we use as keyword. I mean for 2 purpose we can use as keyword.

To get rid of conflict with same name use
use Dhaka\Apple\Fruit;
use Dhaka\Banana\Fruit as Banana;
To make a readable or short alias
use SomeVeryBigAndCreepyPath\SomeVeryBigAndCreepyPath\SomeVeryBigAndCreepyClass as Bigclass;