FilterIterator::key
(PHP 5 >= 5.1.0, PHP 7, PHP 8)
FilterIterator::key — Get the current key
Description
public FilterIterator::key(): mixed
Warning
This function is currently not documented; only its argument list is available.
Get the current key.
Parameters
This function has no parameters.
Return Values
The current key.
See Also
- FilterIterator::next() - Move the iterator forward
- FilterIterator::current() - Get the current element value
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https://www.php.net/manual/en/filteriterator.key.php
