README

The WpiService class is a PHP library that allows you to check the performance of a website using the Google PageSpeed Insights API. This library provides a convenient way to analyze a website's performance metrics and retrieve specific performance data.

Installation

To use this library in your PHP project, follow these steps:

1. Install Guzzle HTTP client, if you haven't already, using Composer:

   composer require guzzlehttp/guzzle

2. Install WpiService Package in your project.

   composer require wpiservice/wpi-service

3. Create an instance of the WpiService class in your code.

use wpiservice\WpiService\WpiService;

$wpiService = new WpiService();

Usage

Performance Analysis

You can use the Performance method to analyze the performance of a website. This method takes two parameters: the URL of the website to be analyzed and your Google PageSpeed API key for authentication and access to the API.

$url = 'https://example.com';
$apiKey = 'your-api-key';

$result = $wpiService->Performance($url, $apiKey);

if (isset($result['error'])) {
    // Handle the error.
} else {
    // Use the performance data.
}

Fetching Specific Performance Metrics

You can also fetch specific performance metrics from the Google PageSpeed Insights data using the PerformanceMetric method. This method takes two parameters: the performance data obtained from the API and the name of the specific performance metric to be retrieved.

$performanceData = $wpiService->Performance($url, $apiKey);
$metricName = 'first-contentful-paint';

$metricData = $wpiService->PerformanceMetric($performanceData, $metricName);

if (isset($metricData['error'])) {
    // Handle the error.
} else {
    // Use the specific performance metric data.
}

Valid values for $metricName include:

• 'first-contentful-paint'
• 'largest-contentful-paint'
• 'total-blocking-time'
• 'cumulative-layout-shift'

Error Handling

Both Performance and PerformanceMetric methods return an associative array containing performance data or an error message if the request or metric retrieval fails. You should check for the presence of the 'error' key in the returned data to handle errors gracefully.

License

This library is licensed under the MIT License.

Contribution

Contributions are welcome! If you'd like to contribute to this project, please open an issue or submit a pull request.

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