README

Introduction

Lightweight, attribute-driven PHP API Server that simplifies route definition, request validation, and response filtering. It aims to make building structured REST APIs clean, fast, and type-safe, leveraging PHP 8+ attributes.

Requirements

Before running the application, make sure you have the following installed:

• Web Server: Apache or Nginx
• PHP: >= 8.2
• Composer: for dependency management

Installation

composer require gijsbos/apiserver

Setup

Controllers

Extend your controllers with the RouteController class and create a new route by defining attributes:

• Route(method, path) or short GetRoute, PostRoute, PutRoute, DeleteRoute, PatchRoute, OptionsRoute.
• ReturnFilter(array) - assoc array containing keys to filter out.
• RequiresAuthorization() - extends the ExecuteBeforeRoute, provides simple token checking and extraction.

Route Parameters

Route parameters allow you to inject parameters into your controller method.

• PathVariable - Extracts parameters from path that have been defined using curly brackets.
• RequestParam - Extracts parameters from global variables.
• RequestHeader - Extracts headers from server headers.

Parameter behaviour can be controlled by both defining union types and optional parameters.

• RequestParam|string $id - Expects a string value, when not defined defaults to empty string.
• RequestParam|int $id - Expects an int value, cast to int or defaults to empty string.
• RequestParam|float $id - Expects an float value, cast to float or defaults to empty string.
• RequestParam|double $id - Expects an int value, cast to double or defaults to empty string.
• RequestParam|bool $id - Expects an int value, cast to bool or defaults to empty string.

Allowing null values requires you to add the null union type:

• RequestParam|string|null $id - Expects a string value, when not defined defaults to null.

Route parameter options can be defined by defining the object inside the parameter definition:

PathVariable|string $id = new PathVariable(["min" => 0, "max" => 999, "required" => true, "pattern" => "/\d+/", "default" => 1])

The following options can be used:

• min int - minimum value for int values, minimum length for string values.
• max int - maximum value for int values, maximum length for string values.
• required bool - when true, throws missing error when parameter is not defined (has no effect on PathVariable).
• pattern string - regexp pattern uses to check the value.
• default mixed - fallback value when value is empty.
• values array - permitted values or throws error.

Example

class UserController extends RouteController
{
    #[GetRoute('/user/{id}/')]
    #[ReturnFilter(['name','id'])]
    public function getUser(
        PathVariable|string $id = new PathVariable(["min" => 0, "max" => 999, "required" => false]),
        RequestParam|string $name = new RequestParam(["min" => 0, "max" => 10, "pattern" => "/^[a-z]+$/", "required" => false, "default" => "john"]),
    )
    {
        return [
            "id" => "<$id>",
            "name" => $name,
        ];
    }
}

Server

Create a server by defining the following in your index.php. Every request must be rewritten to the index.php file.

try
{
    $server = new Server([
        "requireHttps" => false,        // Must use HTTPS or receive error
        "pathPrefix" => "",             // Used for subpaths e.g. localhost/mysubpath/
        "escapeResult" => true,         // Escapes special characters
        "addServerTime" => false,       // Adds code execution time
        "addRequestTime" => false,      // Adds total server response time
    ]);

    $server->listen();
}
catch(RuntimeException | Exception | TypeError | Throwable $ex)
{
    print($ex->getMessage());
}

Caching Routes

Routes paths are cached in the cache folder, you can use the bin/api binary to cache routes. When there is no routes file, a cache will be created upon first use.

./bin/api cache routes -(v)erbose (--autoload <file>)

Enable APCU in your PHP build for faster route resolving. Build Docker images with the following command:

RUN pecl install apcu && docker-php-ext-enable apcu

Contributions

Contributions are welcome!
Please open an issue or submit a pull request following our contribution guidelines.