How can the code snippet be modified to handle edge cases or unexpected input when generating the URL list?

The code snippet can be modified to handle edge cases or unexpected input by adding checks to validate the input before generating the URL list. This can include checking if the input is an array and if each element is a valid URL. Additionally, handling exceptions or errors that may occur during the URL generation process can help improve the robustness of the code. 

function generateURLList($urls) {
    if (!is_array($urls)) {
        throw new InvalidArgumentException('Input must be an array');
    }

    $urlList = [];
    foreach ($urls as $url) {
        if (filter_var($url, FILTER_VALIDATE_URL) === false) {
            throw new InvalidArgumentException('Invalid URL: ' . $url);
        }
        $urlList[] = $url;
    }

    return $urlList;
}

// Example usage
$urls = ['https://example.com', 'https://invalidurl', 'https://anotherexample.com'];
try {
    $urlList = generateURLList($urls);
    print_r($urlList);
} catch (InvalidArgumentException $e) {
    echo 'Error: ' . $e->getMessage();
}

Keywords

error handling edge cases unexpected input URL generation PHP functions

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