How can PHP developers effectively troubleshoot errors in their code, such as when writing to a file?

When troubleshooting errors in writing to a file in PHP, developers can start by checking file permissions, ensuring the file exists, and using error handling techniques such as try-catch blocks. Additionally, they can use functions like `file_put_contents()` to simplify the process of writing to a file.

try {
    $file = 'example.txt';
    $data = 'Hello, World!';
    
    if (file_exists($file) && is_writable($file)) {
        file_put_contents($file, $data);
        echo "Data written to file successfully.";
    } else {
        throw new Exception("File is not writable or does not exist.");
    }
} catch (Exception $e) {
    echo "Error: " . $e->getMessage();
}