HH\KeyedIterable::filter

Returns a KeyedIterable containing the values of the current KeyedIterable that meet a supplied condition.

Description

public function filter(
  callable $fn,
): KeyedIterable<Tk,Tv>

Returns a KeyedIterable containing the values of the current KeyedIterable that meet a supplied condition.

Only values that meet a certain criteria are affected by a call to filter(), while all values are affected by a call to map().

Parameters

  • callable $fn - The callback containing the condition to apply to the KeyedItearble values.

Return Values