Iterator
PHP Manual

Iterator::key

(PHP 5 >= 5.1.0)

Iterator::keyReturn the key of the current element

Описание

abstract public scalar Iterator::key ( void )

Returns the key of the current element.

Параметри

Тази функция няма параметри.

Връщани стойности

Returns scalar on success, integer 0 on failure.

Грешки/Изключения

Issues E_WARNING on failure.


Iterator
PHP Manual