CODEWITHSUNDEEP
phpnamespacescomposer-phppropel
Kevin Pei
Kevin Pei

Reputation: 5872

php `use` class in parent folder

I have installed Propel ORM with Composer but I cannot create a new model as the PHP script is not in the same directory as the PHP class.

I have class Test inside Test.php and I want to use it from subfolder/index.php. Note that class Test then uses Base/Test from Base/Test.php, so using require() is not an option here as Base/Test just goes on to use even more classes generated by composer.

Traditionally, I'm supposed to do the following:

<?php
   use Test;
?>

but since I have Test in the parent folder, I cannot do that, and obviously 

<?php
   use ../Test;
?>

doesn't work.

My folder structure:

My Project
|-- Base
|   `-- Test.php <-- File referenced by `Test` class
|-- subfolder
|   `-- index.php <-- File I want to use `Test` from
`-- Test.php <-- File containing `Test` class

The Actual Code: subfolder/index.php:

<?php 
use \Test;
    require __DIR__ . '/../vendor/autoload.php';
    $test = new Test();
?>

Test.php:

<?php
use Base\Test as BaseTest;

class Test extends BaseTest
{

}

Upvotes: 2

Views: 14697

Answers (2)

daniel rodrigues
daniel rodrigues

Reputation: 21

Just set all the folder that you want in the composer.json file. Like this:

"autoload": {
    "psr-4": {
        "App\\": "app/",
        "Config\\": "config/"
    },
    "files": [
        "config/config.php"
    ]
},

Search about the composer.json tho learn more about it. For the example above i chose the namespaces "App" and "Config" for the directories "app/" and "config/" in the root directory of my project AND chose the file "config/config.php" to be running BEFORE any action in my project.

Upvotes: 1

Sammitch
Sammitch

Reputation: 32272

Test is a namespace and has literally nothing to do with folder structure. Namespaces have a folder-like structure, but you cannot use relative paths.

PSR-4 autoloaders, such as what most Composer packages use these days, map their namespaces in a way that very closely matches the folder structure, but they are still entirely separate concepts.

If you have declared a namespace in a file all subsequent names are considered to be relative to that path. eg:

namespace Foo;

class Bar {}; // \Foo\Bar

If you want to use something outside of the current namespace you need to declare the full path, beginning with \ which signifies the root namespace. eg:

namespace Foo;
use \Test

class Bar { // \Foo\Bar
  public function test() {
    $test = new Test();
    $dbh = new \PDO();
  }
}

Upvotes: 4

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