copyleaks/php-plagiarism-checker

Copyleaks detects online plagiarism and checks content distribution. Use Copyleaks to find out if textual content is original and where it has been used before. This package shows how to integrate with the Copyleaks cloud to search for copyright infringement.

v5.1.1 2025-09-18 09:45 UTC

Requires

• php: >=7.4.0

MIT

• Copyleaks ltd

• publisher
• education
• checker
• plagiarism
• copyrights
• Copyleaks
• infringement

README

The official Copyleaks PHP library, supporting PHP versions >=7.4.0.

🚀 Getting Started

Before you start, ensure you have the following:

• An active Copyleaks account. If you don’t have one, sign up for free.
• You can find your API key on the API Dashboard.

Once you have your account and API key:

Install the SDK:

Install using Packagist

composer require copyleaks/php-plagiarism-checker

📚 Documentation

To learn more about how to use Copyleaks API please check out our Documentation.

💡 Usage Examples

Here are some common usage examples for the Copyleaks SDK. You can also see a comprehensive code example in the demo.php file on our GitHub repository: demo.php.

Get Authentication Token

This example demonstrates how to log in to the Copyleaks API and obtain an authentication token.

<?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}';
    // --------------------

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

For a detailed understanding of the authentication process, refer to the Copyleaks Login Endpoint Documentation.

Submit Text for Plagiarism Scan

This example shows how to prepare and submit raw text content for a plagiarism scan.

<?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}';
    // --------------------

    // 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";

For a full guide please refer to our step by step Guide

For a detailed understanding of the plagiarism detection process, refer to the Copyleaks Submit Endpoint Documentation

AI-Generated Text Detection

Use the AI detection client to determine if content was generated by artificial intelligence.

<?php

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

    use Copyleaks\Copyleaks;
    use Copyleaks\CopyleaksNaturalLanguageSubmissionModel;

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

    $sampleText = "Lions are social animals, living in groups called prides, typically consisting of several females, their offspring, and a few males. Female lions are the primary hunters, working together to catch prey. Lions are known for their strength, teamwork, and complex social structures.";

    $submission = new CopyleaksNaturalLanguageSubmissionModel(
      $sampleText,
    );
    $submission->sandbox = true;

    $response = $this->copyleaks->aiDetectionClient->submitNaturalLanguage($authToken, time(), $submission);
    $this->logInfo('AI Detection - submitNaturalLanguage', $response);

Writing Assistant

Get intelligent suggestions for improving grammar, spelling, style, and overall writing quality.

<?php

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

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

    $sampleText = "Lions are the only cat that live in groups, called pride. A prides typically consists of a few adult males, several feales, and their offspring. This social structure is essential for hunting and raising young cubs. Female lions, or lionesses are the primary hunters of the prid. They work together in cordinated groups to take down prey usually targeting large herbiores like zbras, wildebeest and buffalo. Their teamwork and strategy during hunts highlight the intelligence and coperation that are key to their survival.";

    $scoreWeights = new ScoreWeights(
      0.1, 0.2, 0.3, 0.4
    );

    $submission = new CopyleaksWritingAssistantSubmissionModel(
      $sampleText,
    );

    $submission->sandbox = true;
    $submission->score = $scoreWeights;

    $response = $this->copyleaks->writingAssistantClient->submitText($authToken, time(), $submission);
    $this->logInfo('Writing Assistant - submitText', $response);

For a full guide please refer to our step by step Guide

For a detailed understanding of the Writing assistant process, refer to the Copyleaks writing feedback Endpoint Documentation

Text Moderation

Scan and moderate text content for unsafe, inappropriate, or policy-violating material across various categories.

<?php

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

    use Copyleaks\Copyleaks;
    use Copyleaks\CopyleaksTextModerationRequestModel;
    use Copyleaks\CopyleaksTextModerationConstants;
    use Copyleaks\CopyleaksTextModerationLanguages;
    use Copyleaks\CopyleaksTextModerationResponseModel;
    // --- Your Credentials ---
    $EMAIL_ADDRESS = 'YOUR_EMAIL_ADDRESS';
    $KEY = 'YOUR_API_KEY';
    $WEBHOOK_URL = 'https://your-server.com/webhook/{STATUS}';
    // --------------------

    $labelsArray=[
        new CopyleaksTextModerationLabel(CopyleaksTextModerationConstants::ADULT_V1),
        new CopyleaksTextModerationLabel(CopyleaksTextModerationConstants::TOXIC_V1),
        new CopyleaksTextModerationLabel(CopyleaksTextModerationConstants::VIOLENT_V1),
        new CopyleaksTextModerationLabel(CopyleaksTextModerationConstants::PROFANITY_V1),
        new CopyleaksTextModerationLabel(CopyleaksTextModerationConstants::SELF_HARM_V1),
        new CopyleaksTextModerationLabel(CopyleaksTextModerationConstants::HARASSMENT_V1),
        new CopyleaksTextModerationLabel(CopyleaksTextModerationConstants::HATE_SPEECH_V1),
        new CopyleaksTextModerationLabel(CopyleaksTextModerationConstants::DRUGS_V1),
        new CopyleaksTextModerationLabel(CopyleaksTextModerationConstants::FIREARMS_V1),
        new CopyleaksTextModerationLabel(CopyleaksTextModerationConstants::CYBERSECURITY_V1)
    ]; // labels

     $textModerationRequest = new CopyleaksTextModerationRequestModel(
      "This is some text to scan.", // text
      true,                        // sandbox mode
      CopyleaksTextModerationLanguages::ENGLISH, // language
      $labelsArray
      );

    $response = $this->copyleaks->textModerationClient->submitText($authToken, time(), $model);
    $textModerationResponse= CopyleaksTextModerationResponseModel::fromArray(json_decode(json_encode($response), true));

    $this->logInfo('Text Moderation - submitText', $textModerationResponse);

For a full guide please refer to our step by step Guide

For a detailed understanding of the Text moderation process, refer to the Copyleaks text moderation Endpoint Documentation

Further Resources

• Copyleaks API Dashboard: Manage your API keys, monitor usage, and view analytics from your personalized dashboard. Access Dashboard
• Copyleaks SDK Documentation: Explore comprehensive guides, API references, and code examples for seamless integration. Read Documentation

Support

• If you need assistance, please contact Copyleaks Support via our support portal: Contact Copyleaks Support.
• To arrange a product demonstration, book a demo here: Booking Link.