Question

How many validation filters like FILTER_VALIDATE_EMAIL are currently available?

(a) 5

(b) 6

(c) 7

(d) 8

The question was asked in an internship interview.

I would like to ask this question from HTML Forms topic in section File and Session Handling in PHP of PHP

Answer 1

The correct answer is (c) 7

To explain I would say: There are seven validation filters. They are FILTER_VALIDATE_EMAIL, FILTER_VALIDATE_BOOLEAN, FILTER_VALIDATE_FLOAT, FILTER_VALIDATE_INT, FILTER_VALIDATE_IP, FILTER_VALIDATE_REGEXP, FILTER_VALIDATE_URL.