(PHP 5, PHP 7) Return the string representation of the current element
(PHP 5 >= 5.2.0, PHP 7) The setFlags purpose
(PHP 5 >= 5.2.2, PHP 7) The number of elements in the iterator
(PHP 5, PHP 7) Return the key for the current element
(PHP 5, PHP 7) Return the current element public
(PHP 5, PHP 7) Construct a new CachingIterator object for the iterator.
(PHP 5 >= 5.2.0, PHP 7) Retrieve the contents of the cache
(PHP 5, PHP 7) Check whether the inner iterator has a valid next element
(PHP 5 >= 5.2.0, PHP 7) Get flags used public
(PHP 5 >= 5.2.0, PHP 7) The offsetUnset purpose
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