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Iterator::key

(PHP 5 >= 5.0.0, PHP 7)

Return the key of the current element

abstract public scalar Iterator::key ( void )

Returns the key of the current element.

Returns:

Returns scalar on success, or NULL on failure.

Exception:

Issues E_NOTICE on failure.

Links:

http://php.net/manual/en/iterator.key.php

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2016-02-24 15:53:31

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