Generic Filter Flags

Constants

FILTER_FLAG_NONE (int)

No flags.

FILTER_REQUIRE_SCALAR (int)

Flag used to require the input of the filter to be a scalar.

FILTER_REQUIRE_ARRAY (int)

Flag used to require the input of the filter to be an array.

FILTER_FORCE_ARRAY (int)

This flag wraps scalar inputs into a one element array for filters which operate on arrays.

FILTER_NULL_ON_FAILURE (int)

Use null instead of false on failure.

Usable with any validation FILTER_VALIDATE_* filter.

FILTER_THROW_ON_FAILURE (int)

Throws a Filter\FilterFailedException when a validation filter fails, instead of returning false.

Can be used with any validation FILTER_VALIDATE_* filter.

Available as of PHP 8.5.0.