How many validation filters like FILTER_VALIDATE

Question

How many validation filters like FILTER_VALIDATE_EMAIL are currently available?

Options:

A . 5

B . 6

C . 7

D . 8

Answer: Option C

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.

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