how to set up composer package with packagist

Question

I am trying to set up a composer package but i cannot seem to get it to load when i try it from a new project

my package is here https://github.com/shorif2000/pagination and the packgist is here https://packagist.org/packages/shorif2000/pagination

in a new project i have

{
    "name": "ec2-user/pagination",
    "authors": [
        {
            "name": "shorif2000",
            "email": "shorif2000@gmail.com"
        }
    ],
    "require": {
        "shorif2000/pagination": "dev-master"
    },
    "minimum-stability" : "dev"
}

$ cat index.php
<?php

require './vendor/autoload.php';

use Pagination\Paginator;

$totalItems = 1000;
$itemsPerPage = 50;
$currentPage = 8;
$urlPattern = '/foo/page/(:num)';

$paginator = new Paginator($totalItems, $itemsPerPage, $currentPage, $urlPattern);

?>
<html>
  <head>
    <!-- The default, built-in template supports the Twitter Bootstrap pagination styles. -->
    <link rel="stylesheet" href="//maxcdn.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap.min.css">
  </head>
  <body>

    <?php
      // Example of rendering the pagination control with the built-in template.
      // See below for information about using other templates or custom rendering.

      echo $paginator;
    ?>

  </body>
</html>

it fails with error Fatal error: Uncaught Error: Class 'Pagination\Paginator' not found in /opt/pagination/index.php:12 Stack trace: #0 {main} thrown in /opt/pagination/index.php on line 12. I tried use shorif2000\Pagination\Paginator; which gave same error as well

What happens when you try and load it using composer? If it can't load, it will throw an error. — M. Eriksson, Nov 01 '19 at 16:12
not sure what you mean. i can install it via `composer require shorif2000/pagination` — shorif2000, Nov 01 '19 at 16:13
The namespace in the package (`Pagination`) doesn't match the namespace you're using in the posted code (`shorif2000\Pagination`) — M. Eriksson, Nov 01 '19 at 16:15
i set it to `Pagination`. In the package composer file `"autoload" : { "psr-0" : { "Pagination" : "src/" } },` And `Paginator` is under `src` — shorif2000, Nov 01 '19 at 16:17
You should revert the edits you made to the question. If you update the code you had, the question and answer won't make any sense for future visitors. — M. Eriksson, Nov 01 '19 at 16:29

M. Eriksson · Accepted Answer · 2019-11-01T16:31:26.520

There's more than one issue here.

composer.json (package)

In your composer file (for the Pagination library), change PSR-0 to PSR-4. PSR-0 is an old format that was deprecated around 5 years ago (2014).

Namespaces

Since you're namespace is Pagination\, that's the namespace you should use in the code that uses it.

So if you have a class with:

namespace Pagination;

class Pagination {
    ...
}

then your use statement should simply be:

use Pagination\Pagination;

how to set up composer package with packagist

1 Answers1

composer.json (package)

Namespaces