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https://github.com/Thavarshan/fetch-php

🚀 A lightweight HTTP library inspired by JavaScript's fetch, bringing simplicity and flexibility to PHP HTTP requests.
https://github.com/Thavarshan/fetch-php

fetch fetch-api fetch-php guzzle guzzle-php-library guzzlehttp http http-client javascript-fetch javascript-fetch-api php

Last synced: 7 months ago
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🚀 A lightweight HTTP library inspired by JavaScript's fetch, bringing simplicity and flexibility to PHP HTTP requests.

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README 

          
# Fetch PHP



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**Fetch PHP** is a modern HTTP client library for PHP that brings JavaScript's `fetch` API experience to PHP. Built on top of Guzzle, Fetch PHP allows you to write HTTP code with a clean, intuitive JavaScript-like syntax while still maintaining PHP's familiar patterns.



With support for both synchronous and asynchronous requests, a fluent chainable API, and powerful retry mechanics, Fetch PHP streamlines HTTP operations in your PHP applications.



Full documentation can be found [here](https://fetch-php.thavarshan.com/)



---



## Key Features



- **JavaScript-like Syntax**: Write HTTP requests just like you would in JavaScript with the `fetch()` function and `async`/`await` patterns

- **Promise-based API**: Use familiar `.then()`, `.catch()`, and `.finally()` methods for async operations

- **Fluent Interface**: Build requests with a clean, chainable API

- **Built on Guzzle**: Benefit from Guzzle's robust functionality with a more elegant API

- **Retry Mechanics**: Automatically retry failed requests with exponential backoff

- **PHP-style Helper Functions**: Includes traditional PHP function helpers (`get()`, `post()`, etc.) for those who prefer that style



## Why Choose Fetch PHP?



### Beyond Guzzle



While Guzzle is a powerful HTTP client, Fetch PHP enhances the experience by providing:



- **JavaScript-like API**: Enjoy the familiar `fetch()` API and `async`/`await` patterns from JavaScript

- **Global client management**: Configure once, use everywhere with the global client

- **Simplified requests**: Make common HTTP requests with less code

- **Enhanced error handling**: Reliable retry mechanics and clear error information

- **Type-safe enums**: Use enums for HTTP methods, content types, and status codes



| Feature | Fetch PHP | Guzzle |

|---------|-----------|--------|

| API Style | JavaScript-like fetch + async/await + PHP-style helpers | PHP-style only |

| Client Management | Global client + instance options | Instance-based only |

| Request Syntax | Clean, minimal | More verbose |

| Types | Modern PHP 8.1+ enums | String constants |

| Helper Functions | Multiple styles available | Limited |



## Installation



```bash

composer require jerome/fetch-php

```



> **Requirements**: PHP 8.1 or higher



## Basic Usage



### JavaScript-style API



```php

// Simple GET request

$response = fetch('https://api.example.com/users');

$users = $response->json();



// POST request with JSON body

$response = fetch('https://api.example.com/users', [

    'method' => 'POST',

    'json' => ['name' => 'John Doe', 'email' => 'john@example.com'],

]);

```



### PHP-style Helpers



```php

// GET request with query parameters

$response = get('https://api.example.com/users', ['page' => 1, 'limit' => 10]);



// POST request with JSON data

$response = post('https://api.example.com/users', [

    'name' => 'John Doe',

    'email' => 'john@example.com'

]);

```



### Fluent API



```php

// Chain methods to build your request

$response = fetch_client()

    ->baseUri('https://api.example.com')

    ->withHeaders(['Accept' => 'application/json'])

    ->withToken('your-auth-token')

    ->withQueryParameters(['page' => 1, 'limit' => 10])

    ->get('/users');

```



## Async/Await Pattern



### Using Async/Await



```php

// Import async/await functions

use function async;

use function await;



// Wrap your fetch call in an async function

$promise = async(function() {

    return fetch('https://api.example.com/users');

});



// Await the result

$response = await($promise);

$users = $response->json();



echo "Fetched " . count($users) . " users";

```



### Multiple Concurrent Requests with Async/Await



```php

use function async;

use function await;

use function all;



// Execute an async function

await(async(function() {

    // Create multiple requests

    $results = await(all([

        'users' => async(fn() => fetch('https://api.example.com/users')),

        'posts' => async(fn() => fetch('https://api.example.com/posts')),

        'comments' => async(fn() => fetch('https://api.example.com/comments'))

    ]));



    // Process the results

    $users = $results['users']->json();

    $posts = $results['posts']->json();

    $comments = $results['comments']->json();



    echo "Fetched " . count($users) . " users, " .

         count($posts) . " posts, and " .

         count($comments) . " comments";

}));

```



### Sequential Requests with Async/Await



```php

use function async;

use function await;



await(async(function() {

    // First request: get auth token

    $authResponse = await(async(fn() =>

        fetch('https://api.example.com/auth/login', [

            'method' => 'POST',

            'json' => [

                'username' => 'user',

                'password' => 'pass'

            ]

        ])

    ));



    $token = $authResponse->json()['token'];



    // Second request: use token to get user data

    $userResponse = await(async(fn() =>

        fetch('https://api.example.com/me', [

            'token' => $token

        ])

    ));



    return $userResponse->json();

}));

```



### Error Handling with Async/Await



```php

use function async;

use function await;



try {

    $data = await(async(function() {

        $response = await(async(fn() =>

            fetch('https://api.example.com/users/999')

        ));



        if ($response->isNotFound()) {

            throw new \Exception("User not found");

        }



        return $response->json();

    }));



    // Process the data



} catch (\Exception $e) {

    echo "Error: " . $e->getMessage();

}

```



## Traditional Promise-based Pattern



```php

// Set up an async request

// Get the handler for async operations

$handler = fetch_client()->getHandler();

$handler->async();



// Make the async request

$promise = $handler->get('https://api.example.com/users');



// Handle the result with callbacks

$promise->then(

    function ($response) {

        // Process successful response

        $users = $response->json();

        foreach ($users as $user) {

            echo $user['name'] . PHP_EOL;

        }

    },

    function ($exception) {

        // Handle errors

        echo "Error: " . $exception->getMessage();

    }

);

```



## Advanced Async Usage



### Concurrent Requests with Promise Utilities



```php

use function race;



// Create promises for redundant endpoints

$promises = [

    async(fn() => fetch('https://api1.example.com/data')),

    async(fn() => fetch('https://api2.example.com/data')),

    async(fn() => fetch('https://api3.example.com/data'))

];



// Get the result from whichever completes first

$response = await(race($promises));

$data = $response->json();

echo "Got data from the fastest source";

```



### Controlled Concurrency with Map



```php

use function map;



// List of user IDs to fetch

$userIds = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10];



// Process at most 3 requests at a time

$responses = await(map($userIds, function($id) {

    return async(function() use ($id) {

        return fetch("https://api.example.com/users/{$id}");

    });

}, 3));



// Process the responses

foreach ($responses as $index => $response) {

    $user = $response->json();

    echo "Processed user {$user['name']}\n";

}

```



### Batch Processing



```php

use function batch;



// Array of items to process

$items = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10];



// Process in batches of 3 with max 2 concurrent batches

$results = await(batch(

    $items,

    function($batch) {

        // Process a batch

        return async(function() use ($batch) {

            $batchResults = [];

            foreach ($batch as $id) {

                $response = await(async(fn() =>

                    fetch("https://api.example.com/users/{$id}")

                ));

                $batchResults[] = $response->json();

            }

            return $batchResults;

        });

    },

    3, // batch size

    2  // concurrency

));

```



### With Retries



```php

use function retry;



// Retry a flaky request up to 3 times with exponential backoff

$data = await(retry(

    function() {

        return async(function() {

            return fetch('https://api.example.com/unstable-endpoint');

        });

    },

    3, // max attempts

    function($attempt) {

        // Exponential backoff strategy

        return min(pow(2, $attempt) * 100, 1000);

    }

));

```



## Advanced Configuration



### Authentication



```php

// Basic auth

$response = fetch('https://api.example.com/secure', [

    'auth' => ['username', 'password']

]);



// Bearer token

$response = fetch_client()

    ->withToken('your-oauth-token')

    ->get('https://api.example.com/secure');

```



### Proxies



```php

$response = fetch('https://api.example.com', [

    'proxy' => 'http://proxy.example.com:8080'

]);



// Or with fluent API

$response = fetch_client()

    ->withProxy('http://proxy.example.com:8080')

    ->get('https://api.example.com');

```



### Global Client Configuration



```php

// Configure once at application bootstrap

fetch_client([

    'base_uri' => 'https://api.example.com',

    'headers' => [

        'User-Agent' => 'MyApp/1.0',

        'Accept' => 'application/json',

    ],

    'timeout' => 10,

]);



// Use the configured client throughout your application

function getUserData($userId) {

    return fetch_client()->get("/users/{$userId}")->json();

}



function createUser($userData) {

    return fetch_client()->post('/users', $userData)->json();

}

```



## Working with Responses



```php

$response = fetch('https://api.example.com/users/1');



// Check if request was successful

if ($response->isSuccess()) {

    // HTTP status code

    echo $response->getStatusCode(); // 200



    // Response body as JSON

    $user = $response->json();



    // Response body as string

    $body = $response->getBody()->getContents();



    // Get a specific header

    $contentType = $response->getHeaderLine('Content-Type');



    // Check status code categories

    if ($response->getStatus()->isSuccess()) {

        echo "Request succeeded";

    }

}

```



## Working with Type-Safe Enums



```php

use Fetch\Enum\Method;

use Fetch\Enum\ContentType;

use Fetch\Enum\Status;



// Use enums for HTTP methods

$client = fetch_client();

$response = $client->request(Method::POST, '/users', $userData);



// Check HTTP status with enums

if ($response->getStatus() === Status::OK) {

    // Process successful response

}



// Content type handling

$response = $client->withBody($data, ContentType::JSON)->post('/users');

```



## Error Handling



```php

// Synchronous error handling

try {

    $response = fetch('https://api.example.com/nonexistent');



    if (!$response->isSuccess()) {

        echo "Request failed with status: " . $response->getStatusCode();

    }

} catch (\Throwable $e) {

    echo "Exception: " . $e->getMessage();

}



// Asynchronous error handling

$handler = fetch_client()->getHandler();

$handler->async();



$promise = $handler->get('https://api.example.com/nonexistent')

    ->then(function ($response) {

        if ($response->isSuccess()) {

            return $response->json();

        }

        throw new \Exception("Request failed with status: " . $response->getStatusCode());

    })

    ->catch(function (\Throwable $e) {

        echo "Error: " . $e->getMessage();

    });

```



## License



This project is licensed under the MIT License - see the [LICENSE.md](LICENSE.md) file for details.



## Contributing



Contributions are welcome! We're currently looking for help with:



- Expanding test coverage

- Improving documentation

- Adding support for additional HTTP features



To contribute:



1. Fork the Project

2. Create your Feature Branch (`git checkout -b feature/amazing-feature`)

3. Commit your Changes (`git commit -m 'Add some amazing-feature'`)

4. Push to the Branch (`git push origin feature/amazing-feature`)

5. Open a Pull Request



## Acknowledgments



- Thanks to **Guzzle HTTP** for providing the underlying HTTP client

- Thanks to all contributors who have helped improve this package

- Special thanks to the PHP community for their support and feedback