(PECL judy >= 0.1.1)
Search for the first absent index in the Judy array
public int Judy::firstEmpty ([ mixed $index = 0 ] )
Search (inclusive) for the first absent index that is equal to or greater than the passed Index.
Parameters:
index
The index can be an integer or a string corresponding to the index where to start the search.
Returns:
Return the corresponding index in the array.
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