range

Returns a list containing an arithmetic progression of integers:

.. code-block:: twig

{% for i in range(0, 3) %}
    {{ i }},
{% endfor %}

{# outputs 0, 1, 2, 3, #}

When step is given (as the third parameter), it specifies the increment (or decrement for negative values):

.. code-block:: twig

{% for i in range(0, 6, 2) %}
    {{ i }},
{% endfor %}

{# outputs 0, 2, 4, 6, #}

.. note::

Note that if the start is greater than the end, ``range`` assumes a step of
``-1``:

.. code-block:: twig

    {% for i in range(3, 0) %}
        {{ i }},
    {% endfor %}

    {# outputs 3, 2, 1, 0, #}

The Twig built-in .. operator is just syntactic sugar for the range function (with a step of 1, or -1 if the start is greater than the end):

.. code-block:: twig

{% for i in 0..3 %}
    {{ i }},
{% endfor %}

.. tip::

The ``range`` function works as the native PHP `range`_ function.

Arguments

• low: The first value of the sequence.
• high: The highest possible value of the sequence.
• step: The increment between elements of the sequence.

.. _range: https://www.php.net/range