Definition: The term 'inputfilter.php' refers to a PHP script that filters input data before processing, such as converting it from text to HTML or vice versa. Definition: A function used in web application development that processes user input and filters it according to certain rules or criteria. This can include validating input types (e.g., email addresses, phone numbers), transforming the content based on specific requirements, and more advanced functionalities like password hashing or secure data storage. The term 'inputfilter.php' is a common function in web application development used by developers for sanitizing user inputs before processing them for various purposes.