# composer-repl

**Repository Path**: mirrors_ramsey/composer-repl

## Basic Information

- **Project Name**: composer-repl
- **Description**: :shell: A REPL for PHP built into Composer (using PsySH)
- **Primary Language**: Unknown
- **License**: MIT
- **Default Branch**: main
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 0
- **Forks**: 0
- **Created**: 2020-08-26
- **Last Updated**: 2025-09-27

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

<h1 align="center">ramsey/composer-repl</h1>

<p align="center">
    <strong>A REPL for PHP built into Composer.</strong>
</p>

<p align="center">
    <a href="https://github.com/ramsey/composer-repl"><img src="https://img.shields.io/badge/source-ramsey/composer--repl-blue.svg?style=flat-square" alt="Source Code"></a>
    <a href="https://packagist.org/packages/ramsey/composer-repl"><img src="https://img.shields.io/packagist/v/ramsey/composer-repl.svg?style=flat-square&label=release" alt="Download Package"></a>
    <a href="https://php.net"><img src="https://img.shields.io/packagist/php-v/ramsey/composer-repl.svg?style=flat-square&colorB=%238892BF" alt="PHP Programming Language"></a>
    <a href="https://github.com/ramsey/composer-repl/blob/main/LICENSE"><img src="https://img.shields.io/packagist/l/ramsey/composer-repl.svg?style=flat-square&colorB=darkcyan" alt="Read License"></a>
    <a href="https://github.com/ramsey/composer-repl-lib/actions/workflows/continuous-integration.yml"><img src="https://img.shields.io/github/actions/workflow/status/ramsey/composer-repl-lib/continuous-integration.yml?branch=main&style=flat-square&logo=github" alt="Build Status"></a>
    <a href="https://codecov.io/gh/ramsey/composer-repl-lib"><img src="https://img.shields.io/codecov/c/gh/ramsey/composer-repl-lib?label=codecov&logo=codecov&style=flat-square" alt="Codecov Code Coverage"></a>
</p>

## About

This [Composer](https://getcomposer.org) plugin provides the `composer repl`
command.

REPL stands for *read-eval-print loop*. It's a language shell that reads user
input, evaluates the input using a programming language (in this case, PHP), and
prints the output to the screen. Then, it returns to the read state (that's the
*loop* part).

[PsySH](https://psysh.org) is the REPL providing the magic behind
ramsey/composer-repl. PsySH is a language shell for PHP. It's similar to
[irb](https://github.com/ruby/irb) for Ruby, [IPython](https://ipython.org) for
Python, and [JShell](https://docs.oracle.com/javase/9/tools/jshell.htm) for
Java. In addition to acting as a language shell, PsySH can also function as an
interactive debugger and development console.
[Laravel Tinker](https://github.com/laravel/tinker), [Drush](https://www.drush.org)
for Drupal, [WP-CLI shell](https://github.com/wp-cli/shell-command)
for WordPress, [CakePHP console](https://book.cakephp.org/3/en/console-and-shells/repl.html),
and [Yii shell](https://github.com/yiisoft/yii2-shell) are a few of the projects
using PsySH.

> [!TIP]
> You may use this REPL without the Composer plugin functionality by requiring
> [ramsey/composer-repl-lib](https://github.com/ramsey/composer-repl-lib) instead.

This project adheres to a [code of conduct](CODE_OF_CONDUCT.md).
By participating in this project and its community, you are expected to
uphold this code.

## Installation

Install this package as a development dependency using
[Composer](https://getcomposer.org).

``` bash
composer require --dev ramsey/composer-repl
```

## Usage

Open your terminal and type `composer repl`. You may also type `composer shell`,
if you prefer.

You'll see something similar to this:

```
Psy Shell v0.12.7 (PHP 8.4.4 — cli) by Justin Hileman
------------------------------------------------------------------------
Welcome to the development console (REPL).
To learn more about what you can do in PsySH, type `help`.
------------------------------------------------------------------------
>>>
```

While in the dev console, you can do cool things like this:

``` php
>>> $hello = 'Hello, world'
=> "Hello, world"

>>> echo $hello
Hello, world

>>> foreach ([1, 2, 3] as $x) echo $x . "\n"
1
2
3

>>> $date = new DateTimeImmutable();
=> DateTimeImmutable @1598393282 {#6953
     date: 2020-08-25 22:08:02.643076 UTC (+00:00),
   }

>>> $getDate = fn (DateTimeInterface $dt): DateTimeInterface => $dt;
=> Closure(DateTimeInterface $dt): DateTimeInterface {#6964 …3}

>>> t assertInstanceOf(DateTimeInterface::class, $date);
Test passed!

>>> t assertSame($date, $getDate($date))
Test passed!

>>> phpunit

PHPUnit 12.0.6 by Sebastian Bergmann and contributors.

Runtime:       PHP 8.4.4
Configuration: /path/to/ramsey/conventional-commits/phpunit.xml.dist

...............................................................  63 / 221 ( 28%)
............................................................... 126 / 221 ( 57%)
............................................................... 189 / 221 ( 85%)
................................                                221 / 221 (100%)

Time: 00:00.064, Memory: 12.00 MB

OK (221 tests, 484 assertions)
```

> [!IMPORTANT]
> ✨🐘 This implementation of PsySH has Super ElePHPant Powers. 🐘✨

## Environment Bootstrapping

The power of this REPL comes in its ability to act as a tool in your local
development environment. So, you might want to load parts of your environment
(i.e., configuration, objects, etc.), so you can access these from within the
REPL.

You can do this by specifying any number of PHP scripts to include in
`composer.json`, like this:

``` json
{
    "extra": {
        "ramsey/composer-repl": {
            "includes": [
                "repl.php",
                "tests/bootstrap.php"
            ]
        }
    }
}
```

Any variables set or configuration loaded from these scripts is available to use
from within the REPL.

For example, if `repl.php` contains:

``` php
<?php
$foo = 'bar';
```

And we use `composer.json` to load it with the REPL:

``` json
{
    "extra": {
        "ramsey/composer-repl": {
            "includes": [ "repl.php" ]
        }
    }
}
```

Then, when we're in the REPL, we'll see `$foo` defined:

```
>>> ls
Variables: $env, $foo, $phpunit

>>> $foo
=> "bar"
```

## Contributing

Contributions are welcome! To contribute, please familiarize yourself with
[CONTRIBUTING.md](CONTRIBUTING.md).

## Coordinated Disclosure

Keeping user information safe and secure is a top priority, and we welcome the
contribution of external security researchers. If you believe you've found a
security issue in software that is maintained in this repository, please read
[SECURITY.md](SECURITY.md) for instructions on submitting a vulnerability report.

## Copyright and License

The ramsey/composer-repl plugin is copyright © [Ben Ramsey](https://benramsey.com)
and licensed for use under the terms of the
MIT License (MIT). Please see [LICENSE](LICENSE) for more information.