Manual Count Iterator¶

This iterator accepts two parameters:

• A Traversable object
• An integer (the count of the object)

This allows you to create iterators for data which would be too long to count usint iterator_count. The most common case for this is the number of rows of a database result: You can count the result using COUNT SQL command which takes much less time than iterating through the whole result set.

The iterator also implements Countable interface to make counting easier.

use Indigo\Iterator\ManualCountIterator;

$iterator = new ManualCountIterator(new \ArrayIterator([]), 0);

// Returns 0
count($iterator);