How can I count current indexing inside a loop?

Question

Is it Possible to count current indexing in a loop which starts from indexing 1 as well as 0?

Answer 1

Twig offers special loop variables that makes it easy to know indexing of a loop. You can use loop.index to count your current indexing of the loop, which will starting at 1. If You want to start your indexing from 0 so simply add 0 after loop.index like loop.index0.

There are other loop variable as well.

Like:

• loop.revindex
• loop.revindex0
• loop.first
• loop.last
• loop.length

Answer 2

Aside from the documentation on Craft web site https://craftcms.com/docs/3.x/dev/twig-primer.html, Twig is documented in its own site: https://twig.symfony.com/doc/3.x/

ZealousWeb's answer is documented here: https://twig.symfony.com/doc/3.x/tags/for.html

Inside of a for loop block you can access some special variables:

• loop.index The current iteration of the loop. (1 indexed)|
• loop.index0 The current iteration of the loop. (0 indexed)
• loop.revindex The number of iterations from the end of the loop (1 indexed)
• loop.revindex0 The number of iterations from the end of the loop (0 indexed)
• loop.first True if first iteration
• loop.last True if last iteration
• loop.length The number of items in the sequence
• loop.parent The parent context

{% for user in users %}
   {{ loop.index }} - {{ user.username }}
{% endfor %}

The loop.length, loop.revindex, loop.revindex0, and loop.last variables are only available for PHP arrays, or objects that implement the Countable interface.