$loop->index    The index of the current loop iteration (starts at 0).
$loop->iteration    The current loop iteration (starts at 1).
$loop->remaining    The iterations remaining in the loop.
$loop->count    The total number of items in the array being iterated.
$loop->first    Whether this is the first iteration through the loop.
$loop->last    Whether this is the last iteration through the loop.
$loop->even    Whether this is an even iteration through the loop.
$loop->odd    Whether this is an odd iteration through the loop.
$loop->depth    The nesting level of the current loop.
$loop->parent    When in a nested loop, the parent's loop variable.