### Generate Weather Forecast

Source: https://www.willyweather.com.au/info/api.html

A PHP function to generate a weather forecast based on a random number. It defaults to 'rain' if the random number does not map to a predefined forecast.

```php
public function generateForecast($random) {
  $forecasts = [
    1 => 'partly-cloudy',
    2 => 'fine',
    3 => 'sunny'
  ];

  $response = 'rain'; // default
  if (isset($forecasts[$random])) {
    $response = $forecasts[$random];
  }

  return $response;
}
```

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