Why is it important to follow PHP coding standards and update deprecated functions in scripts?

It is important to follow PHP coding standards and update deprecated functions in scripts to ensure code readability, maintainability, and compatibility with the latest PHP versions. By adhering to coding standards, developers can write consistent and clean code that is easier to understand and maintain. Updating deprecated functions ensures that scripts will continue to work properly and efficiently in newer PHP versions, avoiding potential compatibility issues and security vulnerabilities.

// Before updating deprecated function
mysql_query($query);

// After updating deprecated function
mysqli_query($connection, $query);