Which of the following are common uses of functions in PHP?
- Input validation
- Database management
- File manipulation
- All of the above
Functions in PHP are commonly used for input validation, database management, file manipulation, and many other tasks. They allow for code reuse and modular organization, making the code more maintainable and readable. Functions can be created to perform specific tasks and then called whenever needed within the PHP script. Learn more: https://www.php.net/manual/en/functions.user-defined.php
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