PHP Manual
Function Reference
Variable and Type Related Extensions
Data Structures
Set
Ds\Set::add
Ds\Set::allocate
Ds\Set::capacity
Ds\Set::clear
Ds\Set::__construct
Ds\Set::contains
Ds\Set::copy
Ds\Set::count
Ds\Set::diff
Ds\Set::filter
Ds\Set::first
Ds\Set::get
Ds\Set::intersect
Ds\Set::isEmpty
Ds\Set::join
Ds\Set::jsonSerialize
Ds\Set::last
Ds\Set::merge
Ds\Set::reduce
Ds\Set::remove
Ds\Set::reverse
Ds\Set::reversed
Ds\Set::slice
Ds\Set::sort
Ds\Set::sorted
Ds\Set::sum
Ds\Set::toArray
Ds\Set::union
Ds\Set::xor
Ds\Set::copy
Ds\Set::diff
Set
PHP Manual
Ds\Set::count
Returns the number of values in the set.
See
Countable::count