// Twilio credentials

    $account_sid = 'YOUR_TWILIO_ACCOUNT_SID';

    $auth_token = 'YOUR_TWILIO_AUTH_TOKEN';

    $twilio_number = 'YOUR_TWILIO_PHONE_NUMBER';
    // The destination phone number and message content

    $to_number = 'DESTINATION_PHONE_NUMBER';

    $message_content = 'A post has been updated!';
    // Twilio API URL

    $url = 'https://api.twilio.com/2010-04-01/Accounts/' . $account_sid . '/Messages.json';
    // Setup request to send json via POST

    $data = array(

        'From' => $twilio_number,

        'To' => $to_number,

        'Body' => $message_content

    );

    $post = http_build_query($data);
    // Set up cURL

    $ch = curl_init($url);

    curl_setopt($ch, CURLOPT_POST, true);

    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);

    curl_setopt($ch, CURLOPT_USERPWD, $account_sid . ':' . $auth_token);

    curl_setopt($ch, CURLOPT_HTTPAUTH, CURLAUTH_BASIC);

    curl_setopt($ch, CURLOPT_POSTFIELDS, $post);
    // Send the request and get the response

    $response = curl_exec($ch);

    $error = curl_error($ch);

    $http_status = curl_getinfo($ch, CURLINFO_HTTP_CODE);
    // Close cURL session handle

    curl_close($ch);
    // Check for errors and process the response

    if ($error) {

        error_log('Curl error: ' . $error);

    } else {

        // Process the response as needed

        error_log('Twilio API response: ' . $response);

    }