This guide will walk you through installing the official PHP SDK and running your first scan. In just a few minutes, you’ll be able to check content for plagiarism, AI-generated text, and more directly from your PHP application. Before you start, ensure you have the following:

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Get Started

1

Installation

First, install the official copyleaks/php-plagiarism-checker package from Packagist into your project using Composer.
composer require copyleaks/php-plagiarism-checker
2

Quick Example: Scan Text

Remember to replace the placeholder credentials and webhook URL with your actual values.
scan.php
<?php

require_once(__DIR__ . '/vendor/autoload.php');

use Copyleaks\Copyleaks;
use Copyleaks\CopyleaksFileSubmissionModel;
use Copyleaks\SubmissionProperties;
use Copyleaks\SubmissionWebhooks;

// --- Your Credentials ---
$EMAIL_ADDRESS = 'YOUR_EMAIL_ADDRESS';
$KEY = 'YOUR_API_KEY';
$WEBHOOK_URL = 'https://your-server.com/webhook/{STATUS}';
// --------------------

try {
    // Log in to the Copyleaks API
    echo "Authenticating...\n";
    $copyleaks = new Copyleaks();
    $loginToken = $copyleaks->login($EMAIL_ADDRESS, $KEY);
    echo " Logged in successfully!\n";

    // Prepare your content for scanning
    echo "Submitting text for scanning...\n";
    $textToScan = "Hello world, this is a test.";
    $base64Content = base64_encode($textToScan);
    $scanId = time();

    // Configure the scan
    $webhooks = new SubmissionWebhooks($WEBHOOK_URL);
    $properties = new SubmissionProperties($webhooks);
    $properties->setSandbox(true); // Turn on sandbox mode for testing

    $submission = new CopyleaksFileSubmissionModel($base64Content, 'test.txt', $properties);
    
    // Submit the scan to Copyleaks
    $copyleaks->submitFile($loginToken, $scanId, $submission);
    echo " Scan submitted successfully! Scan ID: " . $scanId . "\n";
    echo "You will be notified via your webhook when the scan is complete.\n";

} catch (Exception $e) {
    echo " An error occurred: " . $e->getMessage() . "\n";
}
3

Understanding the Code

The example code performs four main actions to submit a scan:
  1. Login: It authenticates with your email and API key to get a secure login token, which is required for all subsequent requests.
  2. Prepare Content: It takes a simple string of text and encodes it into Base64 format.
  3. Configure Scan: It creates a SubmissionProperties object containing SubmissionWebhooks to define the scan’s behavior. We enable sandbox mode for safe testing and provide the webhook URL.
  4. Submit for Scanning: It creates a CopyleaksFileSubmissionModel with the content and properties, then sends it to the Copyleaks API. The process is asynchronous; Copyleaks will notify your webhook URL once the scan is complete.

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Next Steps

GitHub Repository

Check the official SDK repository on GitHub for more examples and details.

Packagist Package

View the official package on Packagist to see all available versions.

Check for Plagiarism

Detect plagiarism in text documents using the Copyleaks API. Search billions of sources to find unoriginal content.

Detect AI-Generated Content

Detect AI-generated text via sync or async API calls. This guide covers sync detection, see the Authenticity API Guide for async.

Assess Grammar and Writing Quality

Get writing and grammar suggestions via API. Authenticate, submit text, and access full details in the docs.

Moderate Text

Scan and moderate text content for unsafe or policy-relevant material across 10+ categories.