How can PHP developers integrate i18n solutions like __() function in dynamic form label generation for multilingual support?

```php
<?php
// Get the user's language preference
$user_language = 'en'; // Example language code, can be obtained dynamically

// Function to translate labels based on language preference
function translate_label($label_key) {
    global $user_language;
    $translations = array(
        'form_label_name' => array(
            'en' => 'Name',
            'fr' => 'Nom',
            // Add more translations as needed
        ),
        // Add more label translations as needed
    );
    
    return isset($translations[$label_key][$user_language]) ? $translations[$label_key][$user_language] : $label_key;
}

// Generate dynamic form labels with translation
$form_label_name = translate_label('form_label_name');
?>
```

In this code snippet, the translate_label() function takes a label key as input and returns the translated label based on the user's language preference. Developers can easily add more translations for different labels and languages as needed. This approach allows for a flexible and efficient way to handle multilingual support in dynamic form label generation.