What are some best practices for structuring PHP code to maintain readability and avoid errors like unexpected 'case' statements?

To maintain readability and avoid errors like unexpected 'case' statements in PHP code, it is best practice to properly structure your code by using appropriate indentation and formatting. Additionally, using comments to explain the purpose of each section of code can help improve readability and make it easier to navigate. Lastly, following a consistent coding style and adhering to best practices such as using switch statements correctly can help prevent unexpected errors. 

// Example of properly structured PHP code with switch statement

$day = "Monday";

switch ($day) {
    case "Monday":
        echo "Today is Monday";
        break;
    case "Tuesday":
        echo "Today is Tuesday";
        break;
    // Add more cases as needed
    default:
        echo "Today is not Monday or Tuesday";
}

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