PHP マニュアル
関数リファレンス
その他の基本モジュール
Data Structures
Ds\Vector
Ds\Vector::allocate
Ds\Vector::apply
Ds\Vector::capacity
Ds\Vector::clear
Ds\Vector::__construct
Ds\Vector::contains
Ds\Vector::copy
Ds\Vector::count
Ds\Vector::filter
Ds\Vector::find
Ds\Vector::first
Ds\Vector::get
Ds\Vector::insert
Ds\Vector::isEmpty
Ds\Vector::join
Ds\Vector::jsonSerialize
Ds\Vector::last
Ds\Vector::map
Ds\Vector::merge
Ds\Vector::pop
Ds\Vector::push
Ds\Vector::reduce
Ds\Vector::remove
Ds\Vector::reverse
Ds\Vector::reversed
Ds\Vector::rotate
Ds\Vector::set
Ds\Vector::shift
Ds\Vector::slice
Ds\Vector::sort
Ds\Vector::sorted
Ds\Vector::sum
Ds\Vector::toArray
Ds\Vector::unshift
Ds\Vector::copy
Ds\Vector::filter
Ds\Vector
PHP マニュアル
Ds\Vector::count
Returns the number of values in the collection
See
Countable::count