How do I send a GET request using Guzzle?

Guzzle is a PHP HTTP client that simplifies making HTTP requests and integrates with web services. To send a GET request using Guzzle, you will first need to install the Guzzle package via Composer, and then you can use its client to send requests.

Here's a step-by-step guide on how to send a GET request using Guzzle:

Step 1: Install Guzzle

Before you can use Guzzle, you need to install it using Composer. If you don't have Composer installed, you'll need to download and install it from getcomposer.org. Once Composer is installed, you can install Guzzle by running the following command in your project directory:

composer require guzzlehttp/guzzle

Step 2: Use Guzzle to Send a GET Request

After installing Guzzle, you can create a PHP script that sends a GET request. Below is an example of how to do it:

<?php
require 'vendor/autoload.php';

use GuzzleHttp\Client;

// Create a new Guzzle HTTP client
$client = new Client();

try {
    // Send a GET request to the specified URL
    $response = $client->request('GET', 'https://api.example.com/data');

    // Get the status code of the response
    $statusCode = $response->getStatusCode();

    // Get the body of the response
    $body = $response->getBody();

    // Convert the body to a string
    $content = (string) $body;

    // Print the status code
    echo "Status code: " . $statusCode . "\n";

    // Print the body of the response
    echo "Response body: " . $content . "\n";
} catch (\GuzzleHttp\Exception\RequestException $e) {
    // Handle the exception
    echo "HTTP Request failed\n";
    if ($e->hasResponse()) {
        echo "Error response: " . $e->getResponse()->getBody() . "\n";
    }
}

In the code above, we import the necessary classes and instantiate a new GuzzleHttp\Client object. Then, we use the client's request method to send a GET request to the specified URL. We catch any exceptions that might occur during the request to handle errors gracefully.

Additional Features

Guzzle provides several features that you can use to customize your GET requests, such as:

• Query Parameters: You can pass query parameters with your GET request.

$response = $client->request('GET', 'https://api.example.com/data', [
    'query' => ['key' => 'value', 'otherKey' => 'otherValue']
]);

• Headers: You can add custom headers to your request.

$response = $client->request('GET', 'https://api.example.com/data', [
    'headers' => ['X-Custom-Header' => 'value']
]);

• Timeouts: You can specify a timeout for your request.

$response = $client->request('GET', 'https://api.example.com/data', [
    'timeout' => 5 // Timeout in seconds
]);

• Asynchronous Requests: Guzzle also supports asynchronous requests using promises.

$promise = $client->requestAsync('GET', 'https://api.example.com/data');
$promise->then(
    function ($response) {
        echo 'I completed! ' . $response->getBody();
    },
    function ($exception) {
        echo 'I failed! ' . $exception->getMessage();
    }
);
$promise->wait();

Remember to always look at the official Guzzle documentation for the most up-to-date information and additional functionality at Guzzle's GitHub page.