README

Official PHP SDK for the Metigan API. Send emails, manage contacts, audiences, templates, and forms with ease.

✨ Features

📧 Send Emails - Send HTML emails with attachments, CC, BCC, and templates
👥 Manage Contacts - Create, update, list, and manage contact subscriptions
🎯 Audiences - Organize contacts into audiences and track statistics
📝 Forms - Submit and manage form data
🎨 Templates - Use email templates with dynamic variables
🔄 Automatic Retry - Built-in retry logic for failed requests
⚡ Type Safety - Strong typing with PHP 7.4+ features
🛡️ Error Handling - Comprehensive exception handling

📦 Installation

Install via Composer:

composer require metigan/metigan-php

Or add to your composer.json:

{
    "require": {
        "metigan/metigan-php": "^1.0"
    }
}

🚀 Quick Start

<?php

require 'vendor/autoload.php';

use Metigan\MetiganClient;
use Metigan\Exception\ApiException;
use Metigan\Exception\ValidationException;

// Initialize the client
$client = new MetiganClient(getenv('METIGAN_API_KEY'));

// Send an email
try {
    $result = $client->email()->sendEmail(
        fromAddress: "Sender <sender@example.com>",
        recipients: ["recipient@example.com"],
        subject: "Hello!",
        content: "<h1>Welcome</h1><p>Thank you for signing up.</p>"
    );

    if ($result['success'] ?? false) {
        echo "Email sent successfully!\n";
        // API returns fields in camelCase format
        echo "Emails remaining: " . ($result['emailsRemaining'] ?? 'N/A') . "\n";
    }
} catch (ValidationException $e) {
    echo "Validation Error: " . $e->getMessage() . "\n";
    if ($e->getField()) {
        echo "Field: " . $e->getField() . "\n";
    }
} catch (ApiException $e) {
    echo "API Error: " . $e->getStatusCode() . " - " . $e->getMessage() . "\n";
}

⚙️ Configuration

$client = new MetiganClient(
    apiKey: "your-api-key",
    timeout: 30,        // Optional, defaults to 30 seconds
    retryCount: 3,      // Optional, defaults to 3 retries
    retryDelay: 2,      // Optional, defaults to 2 seconds between retries
    debug: false        // Optional, enables debug logging
);

Getting Your API Key

Get your API key from the Metigan Dashboard.

📧 Sending Emails

Basic Email

$result = $client->email()->sendEmail(
    fromAddress: "Sender <sender@example.com>",
    recipients: ["recipient@example.com"],
    subject: "Email Subject",
    content: "<h1>HTML Content</h1><p>This is the email body.</p>"
);

if ($result['success']) {
    echo "Email sent! Emails remaining: " . $result['emailsRemaining'] . "\n";
}

Email with CC and BCC

$result = $client->email()->sendEmail(
    fromAddress: "Company <company@example.com>",
    recipients: ["main@example.com"],
    subject: "Meeting Invitation",
    content: "You're invited to our meeting.",
    cc: ["copy@example.com"],
    bcc: ["hidden@example.com"],
    replyTo: "reply@example.com"
);

Email with Attachments

$attachment = [
    'content' => file_get_contents('document.pdf'),
    'filename' => 'document.pdf',
    'contentType' => 'application/pdf',
];

$result = $client->email()->sendEmail(
    fromAddress: "Company <company@example.com>",
    recipients: ["customer@example.com"],
    subject: "Important Document",
    content: "Please find the document attached.",
    attachments: [$attachment]
);

Email with Template

$variables = [
    'name' => 'John Doe',
    'company' => 'Acme Inc',
];

$result = $client->email()->sendEmailWithTemplate(
    templateId: "template-123",
    variables: $variables,
    fromAddress: "Sender <sender@example.com>",
    recipients: ["recipient@example.com"],
    replyTo: "reply@example.com"
);

👥 Managing Contacts

Create Contact

$contact = $client->contacts()->create(
    email: "new@example.com",
    audienceId: "audience-123",
    firstName: "Jane",
    lastName: "Doe",
    phone: "+1234567890",
    tags: ["customer", "newsletter"],
    customFields: ["company" => "Acme Inc"],
    status: "subscribed"
);

Get Contact

// Get by ID
$contact = $client->contacts()->get("contact-456");

// Get by email
$contact = $client->contacts()->getByEmail("jane@example.com", "audience-123");

List Contacts

$result = $client->contacts()->list(
    audienceId: "audience-123",
    status: "subscribed",
    tag: "customer",
    search: "john",
    page: 1,
    limit: 50
);

echo "Total contacts: " . ($result['pagination']['total'] ?? 0) . "\n";
foreach ($result['contacts'] ?? [] as $contact) {
    echo $contact['email'] . ": " . ($contact['firstName'] ?? 'N/A') . "\n";
}

Update Contact

$updated = $client->contacts()->update(
    contactId: "contact-456",
    firstName: "Jane Marie",
    lastName: "Smith",
    tags: ["customer", "vip"],
    status: "subscribed"
);

Manage Subscription

// Subscribe
$client->contacts()->subscribe("contact-456");

// Unsubscribe
$client->contacts()->unsubscribe("contact-456");

Manage Tags

// Add tags
$client->contacts()->addTags("contact-456", ["vip", "black-friday"]);

// Remove tags
$client->contacts()->removeTags("contact-456", ["test"]);

🎯 Managing Audiences

Create Audience

$audience = $client->audiences()->create(
    name: "Main Newsletter",
    description: "Main subscriber list"
);

List Audiences

$result = $client->audiences()->list(page: 1, limit: 10);

foreach ($result['audiences'] ?? [] as $audience) {
    echo $audience['name'] . ": " . ($audience['count'] ?? 0) . " contacts\n";
}

Get Audience Statistics

$stats = $client->audiences()->getStats("audience-123");

echo "Total: " . ($stats['total'] ?? 0) . "\n";
echo "Subscribed: " . ($stats['subscribed'] ?? 0) . "\n";
echo "Unsubscribed: " . ($stats['unsubscribed'] ?? 0) . "\n";

Delete Audience

$client->audiences()->delete("audience-123");

🎨 Managing Templates

// Get template
$template = $client->templates()->get("template-123");

// List templates
$templates = $client->templates()->list(page: 1, limit: 10);

foreach ($templates as $template) {
    echo $template['name'] . "\n";
}

📝 Managing Forms

// Submit form
$result = $client->forms()->submit("form-123", [
    'name' => 'John Doe',
    'email' => 'john@example.com',
    'message' => 'Hello, I would like more information.'
]);

echo $result['message'] ?? 'Form submitted successfully';

// Get form
$form = $client->forms()->get("form-123");

// List forms
$forms = $client->forms()->list(page: 1, limit: 10);

🛡️ Error Handling

The SDK provides specific exception types for different error scenarios:

use Metigan\Exception\ApiException;
use Metigan\Exception\ValidationException;

try {
    $result = $client->email()->sendEmail(...);
} catch (ValidationException $e) {
    // Handle validation errors (422)
    echo "Validation Error: " . $e->getMessage() . "\n";
    if ($e->getField()) {
        echo "Field: " . $e->getField() . "\n";
    }
} catch (ApiException $e) {
    // Handle API errors (4xx, 5xx)
    echo "API Error: " . $e->getStatusCode() . " - " . $e->getMessage() . "\n";
    if ($e->getError()) {
        echo "Error code: " . $e->getError() . "\n";
    }
} catch (\Exception $e) {
    // Handle other exceptions
    echo "Unexpected error: " . $e->getMessage() . "\n";
}

Exception Types

ValidationException - Thrown when request validation fails (422)
ApiException - Thrown for API errors (4xx, 5xx)
\Exception - Thrown for network or other unexpected errors

📋 Response Format

Important: The API returns all fields in camelCase format, not snake_case. Always use camelCase when accessing response data:

// ✅ Correct
$result['emailsRemaining']
$result['recipientCount']
$result['successfulEmails']

// ❌ Incorrect
$result['emails_remaining']  // Will be null/undefined
$result['recipient_count']   // Will be null/undefined

🔧 Requirements

PHP 7.4 or higher
ext-json PHP extension
ext-curl PHP extension

📚 API Documentation

For detailed API documentation, visit:

🤝 Support

Email: support@metigan.com
Issues: GitHub Issues
Documentation: https://docs.metigan.com

📄 License

This project is licensed under the MIT License - see the LICENSE file for details.

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