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PHP SDK

The official d3/d3-php-client package provides a high‑level interface to the D3 Business API.

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Installation

composer require d3/d3-php-client

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Quick start

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

use D3\D3Client;

// Initialize the client
$client = new D3Client([
    'api_key' => 'your-api-key-here',
    'base_url' => 'https://api.dragdropdo.com', // Optional, defaults to https://api.dragdropdo.com
    'timeout' => 30000 // Optional, defaults to 30000ms
]);

// Upload a file
$uploadResult = $client->uploadFile([
    'file' => '/path/to/document.pdf',
    'file_name' => 'document.pdf',
    'mime_type' => 'application/pdf',
]);

echo "File key: " . $uploadResult['file_key'] . "\n";

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Initialization

new D3Client(array $config)
Config:
  • api_key (required) – your D3 API key.
  • base_url (optional) – API base URL, default: https://api.dragdropdo.com.
  • timeout (optional) – request timeout in ms, default: 30000.
  • headers (optional) – additional headers to send with every request.

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File upload

uploadFile(array $options): array
Options:
  • file (required) – file path string.
  • file_name (required) – original file name.
  • mime_type (optional) – MIME type (auto‑detected if omitted).
  • parts (optional) – number of upload parts (auto‑calculated).
  • on_progress (optional) – progress callback.
Example: 
$result = $client->uploadFile([
    'file' => '/path/to/file.pdf',
    'file_name' => 'document.pdf',
    'mime_type' => 'application/pdf',
    'on_progress' => function($progress) {
        echo "Upload: {$progress['percentage']}%\n";
    }
]);

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Supported operations

checkSupportedOperation(array $options): array
Options:
  • ext (required) – file extension (e.g. pdf, jpg).
  • action (optional) – specific action (convert, compress, …).
  • parameters (optional) – parameters to validate (e.g. ['convert_to' => 'png']).
Examples: 
// Get available actions for PDF
$actions = $client->checkSupportedOperation(['ext' => 'pdf']);
echo implode(', ', $actions['available_actions']) . "\n";

// Check if convert to PNG is supported
$supported = $client->checkSupportedOperation([
    'ext' => 'pdf',
    'action' => 'convert',
    'parameters' => ['convert_to' => 'png']
]);
echo "Supported: " . ($supported['supported'] ? 'true' : 'false') . "\n";

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Create operations

createOperation(array $options): array
Options:
  • action (required) – "convert" | "compress" | "merge" | "zip" | "share" | "lock" | "unlock" | "reset_password".
  • file_keys (required) – array of file keys from upload.
  • parameters (optional) – action‑specific parameters.
  • notes (optional) – user metadata.
Examples: 
// Convert PDF to PNG
$client->createOperation([
    'action' => 'convert',
    'file_keys' => [$uploadResult['file_key']],
    'parameters' => ['convert_to' => 'png'],
    'notes' => ['userId' => 'user-123']
]);

// Compress
$client->createOperation([
    'action' => 'compress',
    'file_keys' => [$uploadResult['file_key']],
    'parameters' => ['compression_value' => 'recommended']
]);

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Convenience helpers

The client exposes shorthand helpers: 
$client->convert($fileKeys, $convertTo, $notes = null);
$client->compress($fileKeys, $compressionValue = 'recommended', $notes = null);
$client->merge($fileKeys, $notes = null);
$client->zip($fileKeys, $notes = null);
$client->share($fileKeys, $notes = null);
$client->lockPdf($fileKeys, $password, $notes = null);
$client->unlockPdf($fileKeys, $password, $notes = null);
$client->resetPdfPassword($fileKeys, $oldPassword, $newPassword, $notes = null);

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Status & polling

getStatus(array $options): array
pollStatus(array $options): array
Examples: 
// Single status fetch
$status = $client->getStatus(['main_task_id' => 'task-123']);

// Poll until completion
$finalStatus = $client->pollStatus([
    'main_task_id' => 'task-123',
    'interval' => 2000,
    'timeout' => 300000,
    'on_update' => function($status) {
        echo "Status: {$status['operation_status']}\n";
    }
]);

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Complete workflow example

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

use D3\D3Client;
use D3\Exceptions\D3APIError;
use D3\Exceptions\D3ValidationError;

function processFile() {
    $client = new D3Client([
        'api_key' => getenv('D3_API_KEY'),
        'base_url' => 'https://api.dragdropdo.com'
    ]);

    try {
        // 1. Upload
        $uploadResult = $client->uploadFile([
            'file' => './document.pdf',
            'file_name' => 'document.pdf'
        ]);

        // 2. Check support
        $supported = $client->checkSupportedOperation([
            'ext' => 'pdf',
            'action' => 'convert',
            'parameters' => ['convert_to' => 'png']
        ]);
        if (!$supported['supported']) {
            throw new Exception('Convert to PNG is not supported');
        }

        // 3. Create operation
        $operation = $client->convert(
            [$uploadResult['file_key']],
            'png',
            ['userId' => 'user-123', 'source' => 'api']
        );

        // 4. Poll
        $status = $client->pollStatus([
            'main_task_id' => $operation['main_task_id'],
            'interval' => 2000
        ]);

        if ($status['operation_status'] === 'completed') {
            foreach ($status['files_data'] as $file) {
                echo "Download: {$file['download_link']}\n";
            }
        }
    } catch (D3APIError $e) {
        echo "API Error ({$e->getStatusCode()}): {$e->getMessage()}\n";
    } catch (D3ValidationError $e) {
        echo "Validation Error: {$e->getMessage()}\n";
    } catch (Exception $e) {
        echo "Error: {$e->getMessage()}\n";
    }
}

processFile();