Where are namespaces declared in Laravel?

Question

I learned in php that to be able to use a namespace, you have to declare or include first.

<?php
    namespace namespace_01;

    function f1()
    {
        echo 'this is function';
    }

    use namespace_01 as test_namespace;
    test_namespace\f1();
?>

Almost all of laravel codes use namespaces. But where are they defined?

Example,

when I created a controller.

<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;

class controller1 extends Controller
{
    //
}

where is Illuminate\Http\Request defined?

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Emtiaz Zahid Emtiaz Zahid · Accepted Answer · 2018-10-11T08:12:58

Open file from vendor/laravel/framework/src/Illuminate/Http/Request.php

There you will see the namespace declared on top as namespace Illuminate\Http; and the class name is Request

and you can see in your composer.json file

"autoload": {
        "classmap": [
            "database/seeds",
            "database/factories"
        ],
        "psr-4": {
            "App\\": "app/"
        }
    },

so all the classes inside App folder are auto loaded with composer and also the vendor files. you don't need to include files every time.

Where are namespaces declared in Laravel?

2 Answers