Twig Components / Methods / range

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range(low, high, step) is a Twig function to return a list containing an arithmetic progression of integers:

{% 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):

{% 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:

{% 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):

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

Tip: The `range` function works as the native PHP [range](https://www.php.net/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.

Source: Twig