SplFixedArray::key
(PHP 5 >= 5.3.0, PHP 7)
SplFixedArray::key — Return current array index
Description
public SplFixedArray::key ( ) : int
Returns the current array index.
Parameters
This function has no parameters.
Return Values
The current array index.
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https://www.php.net/manual/en/splfixedarray.key.php