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• If the DATABASE_URL starts with postgres:// (Heroku's default), it replaces it with the correct format, postgresql+psycopg2://, making the URI compatible with SQLAlchemy.

Instead of manually replacing the URI, you can use libraries like dj-database-url to parse and adapt the DATABASE_URL for different frameworks or drivers. However, the manual approach is straightforward and works well for most cases.

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<?php
// Turn on all error reporting
error_reporting(E_ALL);

// Display errors
ini_set('display_errors', 1);

// Optionally, you can log errors instead of displaying them
// ini_set('log_errors', 1);
// ini_set('error_log', '/path/to/php-error.log');

echo "Error reporting is enabled.";
?>

• error_reporting(E_ALL);: Enables reporting for all levels of errors.
• ini_set('display_errors', 1);: Ensures that errors are displayed in the browser.
• If you prefer to log the errors instead of displaying them, you can uncomment the log_errors and error_log lines, specifying the path where errors should be logged.

This JavaScript code initializes a DataTables instance on an HTML table with the ID #exampleTable. It enhances the table with various features like responsiveness, server-side processing, AJAX data fetching, and custom styling.

• responsive: true makes the table adapt to different screen sizes.