Professional Integration forWhatsApp Business API PHP

<?php
// WhatsApp Business API - Send Template Message

$accessToken = 'YOUR_ACCESS_TOKEN';
$phoneNumberId = 'YOUR_PHONE_NUMBER_ID';
$apiUrl = "https://graph.facebook.com/v18.0/$phoneNumberId/messages";

$recipientPhone = '1234567890'; // Customer phone number
$templateName = 'order_confirmation'; // Your approved template

$payload = [
    'messaging_product' => 'whatsapp',
    'to' => $recipientPhone,
    'type' => 'template',
    'template' => [
        'name' => $templateName,
        'language' => [
            'code' => 'en_US'
        ],
        'components' => [
            [
                'type' => 'body',
                'parameters' => [
                    [
                        'type' => 'text',
                        'text' => 'John Doe' // Customer name
                    ],
                    [
                        'type' => 'text',
                        'text' => 'ORD-12345' // Order number
                    ]
                ]
            ]
        ]
    ]
];

$ch = curl_init($apiUrl);
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($payload));
curl_setopt($ch, CURLOPT_HTTPHEADER, [
    'Authorization: Bearer ' . $accessToken,
    'Content-Type: application/json'
]);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);

$response = curl_exec($ch);
$httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
curl_close($ch);

if ($httpCode === 200) {
    $result = json_decode($response, true);
    echo "Message sent! ID: " . $result['messages'][0]['id'];
} else {
    echo "Error: " . $response;
}

<?php
// WhatsApp Webhook Handler - Receive Messages

// Verify webhook (one-time setup)
if (isset($_GET['hub_mode']) && $_GET['hub_mode'] === 'subscribe') {
    if ($_GET['hub_verify_token'] === 'YOUR_VERIFY_TOKEN') {
        echo $_GET['hub_challenge'];
        exit;
    }
}

// Process incoming messages
$input = file_get_contents('php://input');
$data = json_decode($input, true);

if (!isset($data['entry'][0]['changes'][0]['value'])) {
    http_response_code(200);
    exit;
}

$value = $data['entry'][0]['changes'][0]['value'];

// Handle incoming message
if (isset($value['messages'][0])) {
    $message = $value['messages'][0];
    $from = $message['from']; // Sender phone number
    $messageType = $message['type'];

    if ($messageType === 'text') {
        $text = $message['text']['body'];

        // Process message (e.g., chatbot logic)
        processMessage($from, $text);
    }

    // Mark message as read
    markAsRead($message['id']);
}

// Handle status updates
if (isset($value['statuses'][0])) {
    $status = $value['statuses'][0];
    updateMessageStatus($status['id'], $status['status']);
}

http_response_code(200);

function processMessage($phone, $text) {
    // Your business logic here
    // Check intent, query database, send response

    if (stripos($text, 'order status') !== false) {
        // Query order status from database
        $orderStatus = getOrderStatus($phone);
        sendTextMessage($phone, "Your order status: $orderStatus");
    }
}

function sendTextMessage($to, $text) {
    // Use the send message function from previous example
    // Implementation here...
}

<?php
// Send Interactive Button Message

$accessToken = 'YOUR_ACCESS_TOKEN';
$phoneNumberId = 'YOUR_PHONE_NUMBER_ID';
$apiUrl = "https://graph.facebook.com/v18.0/$phoneNumberId/messages";

$recipientPhone = '1234567890';

$payload = [
    'messaging_product' => 'whatsapp',
    'recipient_type' => 'individual',
    'to' => $recipientPhone,
    'type' => 'interactive',
    'interactive' => [
        'type' => 'button',
        'body' => [
            'text' => 'Would you like to confirm your appointment for tomorrow at 2 PM?'
        ],
        'action' => [
            'buttons' => [
                [
                    'type' => 'reply',
                    'reply' => [
                        'id' => 'confirm_yes',
                        'title' => 'Confirm'
                    ]
                ],
                [
                    'type' => 'reply',
                    'reply' => [
                        'id' => 'reschedule',
                        'title' => 'Reschedule'
                    ]
                ],
                [
                    'type' => 'reply',
                    'reply' => [
                        'id' => 'cancel',
                        'title' => 'Cancel'
                    ]
                ]
            ]
        ]
    ]
];

$ch = curl_init($apiUrl);
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($payload));
curl_setopt($ch, CURLOPT_HTTPHEADER, [
    'Authorization: Bearer ' . $accessToken,
    'Content-Type: application/json'
]);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);

$response = curl_exec($ch);
curl_close($ch);

echo $response;